Tag Archives: Canal de Isabel II

22nd November 2025: Expogema & Wicked: For Good (Madrid, Spain)

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Wicked: For Good was released on Friday the 21st of November, and this time around I decided not to hit the cinema on opening day as I did for the first part, but to head out on Saturday. That way I could make a day out of it, combining the film with a mineralogy and gemology event. I had to work on Friday morning anyway, so there was no way I could make it to the first session even if I tried. Unfortunately, the weekend coincided with planned railway maintenance – which meant no trains whatsoever.

Getting to Madrid with the train system out (albeit scheduled) was not an odyssey, but close to it. I got to the coach station with 20 minutes to spare, and I had to queue up in a long line. Fortunately, I made it to the bus – good, because I had a timed ticket I had bought online. I learnt later that you can buy a ticket “for the next bus” on site and it’s actually cheaper… There were extra coaches running at the same time to make up for the lack of trains, which makes sense. The train company had arranged coaches of its own, but it charged “train money” for “bus service”. Well over a hundred people had decided, just like me, to take a bus at bus price.

The trip was uneventful with few stops, and I reached the terminus Avenida de América before I had to take the underground to get to Ríos Rosas. That placed me at the ETSIME Escuela Técnica Superior de Ingenieros de Minas y Energía around noon, total peak time. The place was packed with people who had heard about the Expogema event but had no idea what they were getting into – and were therefore “upset” that the event only had “rocks”, and that they were expensive (“lady, I cannot sell you a 400-euro tourmaline for 60 quid” was one of the sentences that echoed in the chambers). I had to take three walks around the fair in order to just see what was on display. I could not afford most of what was being exhibited anyway and for a change, I left without buying anything. I would make up for that on the 2026 Expominerales in the end…

Expogema is the fair dedicated to exhibiting and selling gems and gem-adjacent items such as jewellery. It is organised yearly by the Spanish gemological Institute, Instituto Gemológico Español IGE is a non-profit organisation, created in 1967, as a jewellers’ association. Today it independently certifies and appraises gemstones and jewels, especially diamonds. It works with individual owners, insurance companies, and anyone who is interested in a particular piece. It emits super-complete certificates which describe any gem to boot. Unfortunately, since their analyses are purely physicochemical, the one thing that cannot be certified is the ethical origin of the rocks.

The ETSIME hosts two big fairs a year, Expominerales and Expogema. I missed Expogema last year, because while it’s usually held in late-November or early-December, it happened in September. This year, I wanted to have a look, and I could combine it with other events happening that weekend. Besides, I like the ETSIME, with its little classic museum of mining and geology (Museo Histórico-Minero Don Felipe de Borbón y Grecia) and its eclectic architecture by Ricardo Velázquez Bosco. The building seems to be in perpetual renovation though, but it has a beautiful cloister, which this time around was packed with curious onlookers.

Interior of the ETSIME - two floors of arcades and a glass and iron ceiling.

I left the school and walked out towards a former water cistern, now turned into an exhibition hall Sala Canal de Isabel II. The public company Canal de Isabel II manages the water supply in Madrid, which includes the structures around the River Lozoya. In 1858, the first water deposit was inaugurated in Madrid, designed by engineer Juan de Ribera Piferrer. Three more deposits were constructed, even though an accident during the works on the third one caused 30 fatalities and 60 wounded.

This last deposit was not built underground. It was designed by engineer Diego Martín Montalvo and materialised by Luis Moya Idígoras in 1907. It was a tower made out of mostly brick, and with a height of 36 metres. At the top there was a metal sphere which could hold up to 1500 cubic meters of water. It was used until 1952 to store water, then abandoned, and eventually turned into an exhibition hall in 1986.

In the year 2000, maybe as an operation to improve the reputation of the entity, the foundation Fundación Canal was established, to divulge culture, art, environmental knowledge and the importance of water. Legally, a Spanish foundation must serve “general interest” purposes and must be a non-profit. It might have served as a cover-up or money laundry point, considering that during the 2010s, Canal de Isabel II was involved in several monetary scandals and corruption cases.

The former deposit was hosting photography exhibition, a sample of the archives they have, called 14 millones de ojos. Colección, fotografía, público (14 million eyes. Collection, photography, public). It was a great excuse to explore both the building and the adjacent park, though most of the area was closed off as it was the weekend. The exhibition was a bit strange, with images all over the place, but some of them were very cool. It is apparently… a collection of pictures that people have taken of items that have been exhibited in the venue before? I am not completely sure… There was a disturbing amount of portraits of people pretending to be naked though…

Water deposit turned into exhibition venue - high brick tower with a spherical top.

After a walk around the park, I took the underground and headed towards the central district of Madrid. Since I had started a Christmas ornament collection, buying one in Paris and one in Monaco, I decided to try my luck at finding one for Madrid too. The quest was… surprisingly difficult, but I found a bauble in the seventh souvenir shop I checked.

Afterwards, I found a spot at Kawaii Café for a light lunch. Though they were extremely busy, they had a spot for me and given the choice, I actually like their food. Plus, they’ve got discount cards now. I had a smoothie and a salmon bagel which was more than worth its price. Once I was done, I had the time to check out a couple of shops before I headed to Yelmo Cines Ideal to watch Wicked: For Good, the second part of the Wicked film duology, starring Cynthia Erivo and Ariana Grande. I like Ideal because most of the individual cinemas have enough of a slope that I manage to see above the head of the person in the row in front of me.

Bagel and smoothie from Kawaii Café.

I ended up with conflicting feelings about Wicked: For good. On the one hand, the film felt about 45 minutes to an hour too long. There were reprises of scenes and extra focus on interactions – especially the love triangle – that I could have done without. Also, random spotlight on characters that I know, but don’t even remember if they were even featured in the first part, such as Elphaba’s nanny. On the other hand, there was no way the “ham” could have fit into just one film, considering how long the first part was already. Nevertheless, I do have the feeling they wanted to delve a little further into the authoritarian dystopia of Oz, and the character of the Wizard. After all, if you have Jeff Goldblum around, you want to feature him as heavily as you can. Either that, or the film-makers tried to show the power of propaganda in some modern societies. And not-so-subtly aim for an Oscar or two – the first instalment competed on ten categories and took home two statuettes, but the second one was not even nominated once.

Wicked: For good focuses on the second act of the Wicked musical, based on The Wonderful Wizard of Oz. If the first half tells the story of how Elphaba “becomes” the Wicked Witch of the West, the second focuses on how that affects her. It surprises me though how come people were not anticipating the hit the Wicked film was going to be. When I went in for the first movie, it was just a regular release. This time around, we had a photocall and staff wearing witch hats and handling magic wands.

Wicked photo-op cardboard with all the main characters.

Cynthia Erivo does a good job on Elphaba, but in the end, it’s not that hard to portray her as a sympathetic character, since the watcher is the one privy to all her struggles and goals. However, Ariana Grande delivers a fantastic performance – I had watched the musical thrice at this point (four times now), and it is the first time that the character of Glinda has actually touched me. Grande’s approach gives a depth to the “good witch” that it’s often overlooked. The spotlight on her did not feel as a filler to me, and her voice breaking during I couldn’t be happier is a fantastic touch.

There is something I have realised though – if they decide to turn this into a franchise, I don’t think I’ll follow it. I would not have developed such a big emotional connection with Wicked if my first contact with it had been the films – they are way too long. The musical is just the bare minimum to tug at your heart, no fillers. How I wish I had seen the original New York production though…

The film has a few strokes of genius, mostly homages to the 1939 movie The Wizard of Oz, especially how the character of Dorothy, who is only insinuated, is a carbon copy of Judy Garland’s rendition, down to the dress and hairstyle. Furthermore, the wink to Margaret Hamilton’s cackling laughter and Glinda’s reaction – akin to what new generations would have, being absolutely flabbergasted by it – is hilarious.

Speaking of new and generations. On my right, a group of university students who spent most of the film bawling. On my left, a couple – one of them was a fan, the other one had no idea what was happening, and guessing along the way. Further on that side, a little girl loudly wondering what was going on half of the time. The joys of going to the movies at the weekend.

Upon leaving the cinema, I would have usually walked to the train station, but I had no trains. Thus, I had to go to Puerta del Sol to catch the underground. It was packed. I had not realised that they were turning on the Christmas lights that evening! When I had to change, the crowds in the corridors actually felt dangerous, and I was relieved when I could get to the platform in the opposite direction. That was stressful for a few minutes. I was lucky, though, that the first station was not closed and I could get in.

Once in the Avenida de América hub, I bought a coach ticket to get home – thus learning about the “next bus” tickets. Afterwards, I boarded the first scheduled service, which was on time, direct and ran into no traffic jams. I had been fortunate enough to park near the coach station, so I was home within a little over an hour after boarding. All in all, despite the lack of trains, transportation worked smoothly. I saw everything I wanted to, and I had time to spare, the weather was nice and I saw the film spoiler-free. A rather successful day, I’d say.

16th October 2025: Ruta del Agua (Patones, Spain)

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This day trip happened because of a fortune cookie, really. A couple of days prior, I had gone to the supermarket and found they already had fortune cookies, which is scary because they usually only have them around Christmastime. But I like them, so I bought a pack. When I came back from Alcalá de Henares on the 15th, I opened one. It told me to take a relaxing break to recharge. I don’t really do relaxing, so I decided to take a hike instead. Two day trips in a row? Why not? The weather was being uncharacteristically mild, but it was autumn after all. The landscape should look pretty, and the weather could turn any day now. Furthrmore, I had a project starting the following week, so I decided to tackle what would probably be the last hike of the season.

When back in August I decided that I was tired of waiting for people to come hike to the gullies Cárcavas de Mingo Negro and just headed there, I discovered there is another route along the other side of the river Río Lozoya. This route is maintained by the public company that manages water supply in the Community of Madrid, and by extension the dam, Canal de Isabel II.

The main reason I decided upon this route was the fact that I did not need to plan anything. Coordinates to the parking spot were right on my Sat-Nav and the route has its own app, with its map, GPS location and videos you can watch at every stop. It offers two options , the short and the long routes. Ironically, the time for both is almost the same: the long circular route takes around four hours, and the short one only takes a couple of hours… but it is linear, and then you have to return. I tried to reason with myself that I’d do the short route and when I reached the end, I would decide whether I would turn back (on known terrain) or venture through the circular hike. I also know that I would need to be very tired in order not to explore the complete route.

I waited for sunrise before I left the house, and I reached the parking lot around 9:30, earlier than I thought I would. I changed into my hiking shoes and set off. The dam Presa del Pontón de La Oliva, where the route starts, belongs to the municipality of Patones. It was originally designed to gather drinking water from the river Río Lozoya, and built between 1851 and 1856, though it failed shortly after, as water seeped around and underneath the structure.

After Madrid was made the capital of Spain (as early as 1561), it grew in size and population, and in 1848 the government started a project to increase the water supply to the city, which until then had been just covered by public fountains. The physical canal that would carry the water from the river Río Lozoya was named after the then-queen Isabella II (Isabel II) – Canal de Isabel II. After the failure of the Presa del Pontón de La Oliva dam due to percolation, a new one (Navarejos) was built in 1860, and a reservoir (El Villar) created further upstream in 1882.

The Canal de Isabel II project expanded throughout the 19th and 20th centuries. In 1977, the entity became a public business. It was then weirdly semi-privatised. Since 1995, its main stakeholder is the actual Community of Madrid, so besides drinking water, it is in charge of residual water treatment and “improvement and protection of rivers”. It manages 13 reservoirs which hold almost 950 million square metres and 78 access points to underground water.

The hiking route Ruta del Agua is part of the wider outreach and cultural plan of the company. It runs along the Río Lozoya river bank, and then back along the service paths and some of the water management buildings. The app is ridiculously easy to use, it is actually a map that pings your location so you know where in the path you are. There are specific points with videos which explain details about the flora, fauna and geology, nifty ARs, and a friendly voice congratulating you on your achievements aka reaching the predetermined spots.

I started at the dam, and there were two surveyors there. I let myself be noticed, but apparently they were not paying attention and I startled them. I asked if it was all right  for me to proceed, and they said I would do so under my own responsibility. As if… there was anything else. The first bit of the route runs parallel to the river on the dam structures, and you see the stream underneath. From the path, I checked for cattle since the last time I was there I saw grazing cows. Being free range and all, they might end up in my way. However, most importantly, I wanted to make sure I was not in their way – cows are amongst the deadliest animals in the world, no point in bothering them unnecessarily.

Walkway alongside the vertical rock wall.

Once I left the man-made bit behind and stepped onto the actual dirt track, I was standing between the two vertical walls that create the valley, the porous limestone that allowed water to seep through it, making the dam project fail. A little upstream from this area, geology changes, and black slates compose the walls and soils. This metamorphic rock is not permeable, so it is great to hold the river course.

The Lozoya valley

This, as well as the high purity of the water that streams down Río Lozoya, was the reason to choose the area for Madrid’s drinking water. Long before that, it influenced the landscape, creating an uncharacteristic riverbank forest, more typical of the north than the centre of Spain. Where there should be shrubs and bushes, trees grow, particularly ash trees.

I admit that during this part of the hike I went off track twice. Both times I used animal trails though, and tried not to disturb anything. The path was well maintained except for a small landslide which had taken down a few metres. I was slightly annoyed that I could not manage any photographs of birds, especially the very-common Eurasian crag martin (Ptyonoprogne rupestris, a rock-dwelling bird). I did spot some blue blurs which I want to think were kingfishers, but were probably Eurasian blue tits (Cyanistes caeruleus).

The Lozoya river

The cows I’d seen last time were on the other side of the river, or so I thought. As I turned on the path, I came eye to eye with one of them, just a few metres away. We stared at each other for a couple of seconds, neither sure of what to do. I stepped to the side to clear the path so she could do whatever she wanted. Since I was not in a hurry I thought I could wait for her to go on her way rather than walking past. She grazed for a few more minutes, then went to meet her friends. I guess it was a close encounter of the moo kind.

Free range cows grazing

The path alongside the Lozoya, covered in golden fallen leaves.

Free range cow right in the middle of the path, staring at the camera.

I continued walking and found the enclosure where the cows are kept when not roaming free. I’ve only seen a handful of them both times, but it was big enough for a decently-sized herd. The cows are there – I think – more for historical / sentimental reasons than actual farming. The area used to be criss-crossed by cow paths so the cattle moved around during the year, chasing better pastures. Today, these cows live here all year round, and they get extra hay when they need it.

The Lozoya river

After I had reached the enclosures, I walked onto a wider trail, one fitted for cars. This was about half point, and I’d been walking for about an hour and a half. I had no idea whether actual vehicles would be coming by, so I stuck to the left. The trail went slightly upwards, but it was not hard at all. I was on the slate rock now, and flora was bushy due to deforestation. I was hoping for some pretty autumn colours, but I did not get many of those, unfortunately.

At some point I reached a sign reading “working bees, please take detour”, which placed me in the right position for my best wildlife photography (which was still rather bad, I need lots of practise) of the day – a leaping roe deer (Capreolus capreolus). After the detour, I started coming across other hikers, amongst them a group of deaf people whom I remembered to greet in sign language. I felt proud of myself for that.

The Lozoya valleu from above, including the dam.

The last leg of the hike runs through tall grass and drinking water structures, including aqueducts, pipes and deposits. The water still comes from the river Río Lozoya’s reservoir Embalse del Atazar. This last kilometre or so goes down the hill again, and I got to see gliding vultures and the gullies from afar.

Water channeling pipes

The Lozoya valley hiking track with the gullies in the background.

As the route is circular, towards the end I reached the start point. I had seen the small ruined hermit church Ermita de la Virgen de la Oliva. From the original path it just looked like a ruined hut, but from this perspective, I saw that it was actually an interesting building. It is one of the oldest of its kind in the area – it was erected around the 12th century, in a mix of Romanesque and Mudejar styles, using brick and mortar. Though it is ruined now, it is still an noticeable sight.

Ruined hermit church in the middle of the field.

Afterwards, I just headed back towards the parking lot. I took three hours to hike the circular route – 8 km, 360 metres up and down, and quite a bunch of photographs. I will come back to the area again, I think. I want to see the village, a nearby wind mill, and the large reservoir nearby, El Atazar. But I guess it’ll have to wait till next hiking season…

23rd August 2025: Cárcavas de Mingo Negro (Spain)

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For all the solo exploring I do, I still second-guess my abilities when something I want to see involves a reported-as-difficult hike. However, I got tired of waiting for people who had expressed interest in tagging along for this small adventure. Thus, when the summer heatwave gave way to more bearable temperatures for a couple of days, I drove to the area. There is a convenient parking lot to leave the car without breaking any laws and since I reached it before 9:00, it was still reasonably empty, even if it was a weekend. I changed into my hiking boots and got on walking.

The spot I wanted to reach were the Mingo Negro Gullies Cárcavas de Mingo Negro, in the municipality of Alpedrete de la Sierra, within the nature reserve Parque Natural Sierra Norte de Guadalajara. Gullies are erosive landforms usually created by a combination of running water, especially torrential rains and floods, and small landslides as the sediment collapses. Gullies tend to be devoid of vegetation and generally quite vertical, as they commonly form on steep landscapes, often on sandstone or conglomerate soils. These particular gullies are the remains of an alluvial fan, an accumulation of sediments characteristic of mountain areas in semi-arid climates, which opens as it leaves a confined area, so when you look at it from above, it resembles a fan – hence the name. Gullies are common in badlands as the dry terrain is drained downwards and no vegetation holds it. They are considered to be unstable landscapes.

The Mingo Negro Gullies are on the left bank of the River Río Lozoya. A dam Presa del Pontón de la Oliva was built to contain the river in the 19th century, and though it is still standing, it could not be used as a reservoir. There is a kind of road / bridge that crosses the river and leads to the trail. It was rather easy to follow at first, but eventually I reached the steep part. Though there is technically a trail there, somewhere, the ascent is not easy to follow due to poor maintenance and water erosion. Hiking up the 370-metre slope took me about 20 minutes, and it was tiresome for but not as hard as I had pictured. To be fair though, I’ve recently bought a hiking pole and that was helpful. The terrain was a bit unstable and I kept my eyes on the ground, which is why I almost missed the first sight of the gullies (a later visit to the area revealed that I should have already seen them from right out of the parking lot, but the sun was in my eyes).

A landscape of reddish gullies in the far background

The trail is not well maintained, so plants are overgrown. If you actually want to see anything of the gullies you have to go past the “do not cross” signage, even at the viewpoints. However, you have to be very careful not to approach the border as the terrain is inherently unstable. While I was coming up, the sun masked the clay-red colour a little, which was a pity.

A landscape of reddish gullies

Though some of the online-sourced routes do so, it is also ill-advised to go into the actual gully, so I just stayed in the upper part along one of the marked trails. I did step beyond a couple of barriers, but made sure to stay a respectable distance from the border. I ventured through some of the secondary paths for pictures on my way down. However, I did not go down to the ravine, as cool as that must be, because there is a risk of collapse.

A landscape of reddish gullies with hills in the background

A landscape of reddish gullies

There are several trails that go to or around the Cárcavas de Mingo Negro, the most common of it circular. However, I did not feel like doing that one, which takes over four hours. I wanted to see the dramatic gullies, so once I was done around that area, I turned back using the same trail I had used to climb up. By that time it was around 11:00, and though I had seen nobody on my way there, now I started meeting people climbing. A family became quite indignant because I was not following the circular trail. Someone else had decided to tackle the hike in flip-flops. Some people are… peculiar.

There is a bar somewhere at the beginning of the route, and there were some buildings indeed. However, it was either closed – or I did not find it. I had thought I would stop for breakfast there, and then head to do something else.

I reached the Presa del Pontón de la Oliva dam again. The structure, in the municipality of Patones, belongs to Madrid’s Water Management system Canal de Isabel II and it is considered local heritage as it was the first dam built in the area. Madrid became the capital of Spain in 1561, and in the 19th century its population was growing fast. Water was obtained through fountains, whose waters came from underground water canals built 400 years prior. From the 18th century onward, architects started studying how to channel water from the nearby rivers into the city. Part of this program yielded to building the dam between 1851 and 1856 with the idea to create a reservoir. The structure is a gravity dam, with a height of almost 30 metres and a width of 72 metres at its longest. Two years after it was built, the rest of the project was completed, and water reached Madrid. However, the location had not been correctly chosen – water filtered through the rock walls to the sides and underneath the ashlar construction – and in 1904 the reservoir was closed down, so water flows freely through a tunnel under the construction.

I heeded the “flood plain, do not enter” warnings, but neither Sunday hikers nor free-range cows did. I remained on the upper area and explored a little of the area called “the balcony”, built alongside the dam to admire the structure. There is another hiking route, Ruta del Agua that starts there, but again, this was not something I wanted to tackle today, as it was my first day out after a long period at home. Had I found the bar open, I would have hiked further (the whole route is about four hours though, so it was probably good I did not).

Dam - Pontón de La Oliva with some cows grazing. Since the dam is no longer in use, the area around the dam is dry

In the end, I headed back to the car and drove off. I thought I might stop to see a windmill on the way, but I somehow missed the turn to the hamlet where it stands. I was almost surprised when I saw the road sign for the last village before home. All in all, I saw what I wanted to, and found a nice easy drive with further routes that can be taken and enjoyed in other circumstances. I think I can reasonably squeeze a couple other visits to the area.