5227: Sin Sendero, Cueva
Riaño 30T 451708 4800646 (Datum: ETRS89. Accuracy code: G) Altitude 170m
Length 114m Depth 13m
Area position : Site entrance in context : Logbook search
Updated 24th May, 28th November 2023; 5th, 7th May 2024
The entrance is an open 5m pit under a tree, 12 - 15m down from the road barrier. A ladder aids the climb down and the landing is in a sloping chamber. This leads to a rift that is blind but is heading for Ali Chamber / Mulu Manners area in Cueva Llanío (3234). The multi-flowstone barrier at the end of the rift was capped in the autumn 2023 but no real progress was made. There is one blind side branch for 4m. On the right, near the bottom of the slope, is a slide behind a stal barrier to nicely decorated chambers. A drop left behind a boulder leads to a squeeze into passage leading to a rift (bats) that goes past helictites for about 15m. Near the squeeze is a diggable hole down into a flat mud floor.
Opposite, left in entrance chamber leads downslope to a hole in the wall. A dug-out squeeze and drop leads to a rolling-pebble ramp to a small 'U-turn' chamber. Underneath leads to a short crawl (care) past stalactites leads rapidly down into a large 8m diameter, 5 m high chamber, well decorated, accessed via a slippery ledge. Holes and alcoves in flowstones were investigated but none look promising. [Description: Alf Latham]
For a drawn survey, more detail is required.
At Easter 2023, a passage going back to the entrance was capped open and went for 3m. At the end of the entrance rift, a gap was opened up under the right hand wall.
A possible high level opening at the far end of the main (entrance) rift was checked out in April 2024. Only a small, draughtless hole was found.
Reference: anon., 2022d (autumn logbook); anon., 2022e (Christmas logbook); anon., 2023b (Easter logbook); anon., 2023d (autumn logbook); anon., 2024b (Easter logbook)
Entrance picture :
Underground pictures : April 2023
Detailed survey :
Line Survey :
On area survey :
Survex file : October 2022 - stand alone : with Llanío