Ogof Siani

Alternative Names
Gwter Siani / Sylvester's Hole

Location
Grid Reference: SJ 2475 5100

Altitude 375m

Access
Contact Grosvenor Caving Club.

Description
An ongoing dig in a flood sink excavated to 40m depth. Water reappears in Ogof Pool Park.

History
Initially dug by Wrexham Caving Club in 1963. Now being dug by the Grosvenor Caving Club.