Boulders falling 70ft into a cavern (Five takes)
Man climbing & slipping
Man climbing rock face
Man climbing, with start & stop
Man crawling along small passage, approach & pass
Signal sequence, whistles with spoken introduction
Single rock falling in cave
Single stone falling in cave
Single stone falling in cave
Stones falling down 60ft pot hole in a cave (Six takes)
Tired man walking with start & stop
Two men constant walking up sharp incline of loose stones
Two tired men walking with start & stop
Water dripping in a passage (Close perspective recording)
Water dripping in a passage (Distant perspective recording)
Water running in a cavern (Close perspective recording)
Wire ladder thrown down pitch in a cave (Close perspective recording)
Wire ladder thrown down pitch in a cave (Medium perspective recording)
Woman climbing, with start & stop