Sinc y Giedd

Location
Grid Reference: SN811179

Altitude: ~440m

An obvious sink site on the open mountain west of Dan-yr-ogof, marked on current OS maps as "Sinc Giedd".





Access
Open access.

Description
Length: ~183m

This relatively short cave is significant in that it is associated with the major sink for water that makes its way to Dan-yr-ogof. Currently most of the Afon Giedd sinks some distance upstream from the main sink except during times of flood.

At the time of writing (January 2009), access to the cave is via an entrance in the lower or southerly sink, the way into the cave at the main sink (pictured) being blocked. The lower sink is some 30m or so to the south along an obvious crag line. Squeezing under a large fallen slab gains access to a small chamber. A trench in the floor leads through to some tight and tortuous passages, eventually leading into the cave proper at the foot of a climb/pitch. The entire cave is a confusing maze of interconnecting, multilevel rifts and tubes. There are further short pitches, but some of these can be bypassed. The lower reaches of the cave are choked with cobbles, barring further extension, although there is an enticing draught.

Warning: Cave liable to flooding

History
The cave has been dug by various parties, mainly from SWCC, over the years since first being entered in 1947. Overall, the picture seems to be one of the cave getting shorter rather than longer as flooding washes in more debris!