Barranco de Sía o del Puerto

The Barranco de Sía or del Puerto is an aquatic canyon requiring a full wetsuit, with 11 rappels and a longest drop of 35m. The approach from Yésero takes one hour, following a track uphill to a refuge. Anchors are parabolts, with some tree anchors. The descent begins with a 12m rappel into a shallow pool, followed by a 30m ramp and a 15m rappel. After a walking section, a 12m rappel requires care due to rope friction. The seventh rappel, 35m, can be done actively on the left or more exposed on the right. There are escape routes along the course. The canyon is 1700m long with a vertical drop of 260m, taking about 3 hours to descend. The return walk is short, only 10 minutes.