Ledge, Scaffold, Steps

Ledge (easy to jump to, extremely difficult to climb
back up without a rope), hanging wood planks (3
in total, hanging from stalactites via rotting ropes),
steps around cave wall (some natural, some carved,
descending 100' to #2).
▶ Jump to a plank: Agility DR6 or fall 100' into the water
(see above if someone falls).