Hi Sam , im not involved with the dig, just went to take a look at it, contact CSS Whitewalls , there hut is on the Llangattock escarpment, they have a website Chelsea Spelaeolgical society, plus you could contact South Wales Caving Club on 01639 730613, hope this helps. Gabby

Hi Chris there is indeed a dig going on at the end of St Patricks passage. Photo for your info