Someone in a chamber is bashing a hammer at one of the steps in an excavation attempt.
With a hatchet, a man is hammering a stone step on a stairway.
A man uses a hatchet to hack at something covering stairs.
Someone is using an ax to chip away at the side of concrete steps.
A man is hitting the side of the stairs with a hand-axe.
A man uses a hammer to hit a set of stairs, it doesn't appear to be doing anything to it.
A man uses a hatchet to cut away debris on a stairway.
A man works on chipping away at a dusty flight of stairs.
A man appears to be shaping steps out of stones in a cave or alley.
A man is standing in a tunnel and begins digging out steps.