Boulders falling into 70ft cavern (5 takes)
Ladder thrown down pitch, close perspective
Ladder thrown down pitch, medium perspective
Signal sequence, whistles: one blast means stop, two means pull up, three means let down
Single rock falling
Single stone falling
Single stone falling
Small boulders falling and rolling (6 takes)
Stones falling down 60ft pot hole (6 takes)
Water dripping in cavern, distant perspective
Water gurgling down drain
Water running in cavern, close perspective
Water running in cavern, close perspective
Water running in cavern, medium perspective
Woman climbing with start and stop
1 man climbing and slipping
1 man climbing rock face
1 man climbing with start and stop
1 man constant walking up sharp incline of loose stone
1 man crawling along small passage (approach and pass)
1 man walking (tired with start and stop)
2 men constant walking up sharp incline of loose stone
2 men walking (tired with start and stop)
