Today I took a very scenic hike in the NW part of Tenerife. This part of Tenerife is geologically known as Teno. It is one of the three original basaltic islands that were later joined into one bigger island.
I was hiking about 800 meters down along the Barranco de Masca and later up again. It took a little less than 6 hours and was physically quite demanding. This barranco is a deep and very narrow canyon. Maybe 200 meters deep in the lower part and 60 meters wide. I do not know the exact numbers at the moment. This is just a guess.
Volcanic islands are cut by lots of dikes that once fed the volcanoes higher up. They are easily noticeable in a vertical wall of canyon. Today I am showing you one which I took just before entering the canyon. Most of the photos I took later are unfortunately not that good because I did not want to hike with a tripod but there was not enough light at the bottom of the canyon to take good handheld shots.
This dike stands out as dikes often do because they tend to be more resistant to weathering than the surrounding volcanic material.
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