As you walk East past the old ale barrels now repurposed for ore, you see several areas where the false floors have collapsed.

Alice peeks down into the abyss
This mine is riddled with holes! We must be more careful with explosives...
Memorize the gaps! I don't want anyone to fall down there if we gotta retreat fast.

Cat is also more concerned with the holes than the crystals.
Nyaa that won't do Nya. We need some good markers Nya.

On the way, Cat picks up rocks and places them on the floor, cordoning off dead ends and holes.
Now even in bad visibility we should safely find our way back Nya!

Yulya is not fond of wobbly bridges over chasms with potential monsters lurking below and crosses as fast as possible. She casts LIGHT on a small rock and tosses it into the hole to see what happens.

Cat readies her bow to shoot anything that would react to the light.
Stay clear from the edge Nya and be ready to fall back Nya!

Cat looks at the orc remains
We should destroy any skeletons that look like they could rise up again and cause trouble Nya!

Alice takes her 10ft pole and pokes the puffball in the NW corner, ready to move back should it release spores or something. If it does nothing, Alice uses Phagocytosis on a fungus to determine if it is an ordinary living being.
Cat, is this edible?

Cat shakes her head at her alien friend's tastes.
Nya maybe for you Nya! I wouldn't eat that Nya but you try first Nya! But be careful Nya!