True 1623-BS16 BS16 1623 6 BS16 1623-BS16 Proc. Univ. Bristol Spelaeol Soc. 1992 19 (2), 263 UBSS finds - see UBSS or more specifically Proc. Univ. Bristol Spelaeol Soc. 1992 19 (2), 251-264 20m remoter/bs16.htm remoter/bs16.htm