West Twin Brook Adit, Burrington Combe
Posted: Wed 01 Mar 2006 10:09
With thanks to Bristol Water and UBSS, this site has now had a combination lock fitted. Although not sufficiently difficult to justify a trip for "proper" cavers, it is possible to see the sequencing of the geology from lower limestone shale through green mud bands to old red sandstone and so has an interest value to those keen on earth sciences.