Los Hornos Dam

Los Hornos, also known as La Cumbre, is 1565 meters above sea level. i.e. M. The dam was built in 1933 from mortar masonry. It was later expanded and is now 27m high and has a capacity of 697000m³. Water is channeled to the communities of Arucas and San Mateo through irrigation ditches and tunnels.
Presa de Los Hornos viewpoint
The reservoir is located on a strange volcanic rock called "Roque Nublo Breccie". The surrounding vegetation consists of a recently reforested pine grove, as well as various types of broom and sage, which are very common in the high mountains.
Source: grancanaria.com/turismo/en/natur/network-of-viewpoints-of-gran-canaria/mirador-presa-de-los-hornos

An old dam wall that obviously serves as a water reservoir for the region 🌞👌🇪🇦😎

Wonderfully located and the Roque Nublo car park is definitely worth a detour.