Barrancos del Pas Tancat, Bolulla

Equipment: harness, helmet, 2 x 40m ropes, belay device, prussic, sling with crab or Petzl connect to clip into bolts as a safety line (essential at some of belays)
Approach:
Take the CV-715 from Tárbena to Bolulla, between 45km and 46km lookout for a sharp turning off to the right on a hairpin bend, turn off the main road here and follow this road for about 2-3km to a green bridge, park immediately before this.
Description
Ignore the distance and elevation stats of this route as the app didn’t like being in a canyon and went a bit crazy!!
The first part of this route is uphill on a tarmac and concrete road in excellent condition and the time can be shortened by an hour by using two cars, one parked at the finish (green bridge) and the second at the col at the top of the hill where the concrete road ends (2 car spaces).
After the col, the road becomes a track and goes downhill, at a junction take the right turn and continue to follow downhill. At an olive grove with a concrete water channel, we left the track and walked along the bottom of the olive grove, the path is very faint and we used the wikiloc app to locate the start of the canyon.
First 2 abseils are short but are a slippery down climb if not used, next is about 6m, followed by one of 15m into a small basin, the first big abseil follows. This is about 30m and mostly free of the wall, we added an extra crab to the belay to keep control in the free area (and were grateful we had). Wrap your rope as the next part is along the canyon floor and more open.
A short abseil leads to the “tube” descent, which can be done as a 15m and 25m but the belay for the 25m ab has no stance and is hanging and unsuitable for more than 2 (and awkward even for 2). One long abseil to the large cavern below is easiest and safest, part of this is free but descent can be controlled and less experienced abseilers can be “dead roped” by friends to ensure safety. This cavern is large and quite impressive.
Three or four more short abseils of no more than 10m follow until the final abseil into the last chamber, an impressive large bowl, where there is a rope to assist scrambling out of this last part of the canyon.
The walk out is along the canyon floor which is quite overgrown but in 15-20 minutes you emerge at the green bridge where you parked the car.