With its starting and finishing point in the marina in the cliffs of Los Gigantes, in the extreme northwest of Tenerife, this mountain pass route leads to the town of Santiago del Telde, before taking the winding road which takes us to the pretty hamlet of Masca. At this point we come upon the terrain dominated by the Teno mountain range, a spectacular spot, full of beautiful valleys and steep cliffs, where the slopes of the deep ravines whose walls have an incline of more than 1,000 metres have to be negotiated.