Curious what the warning says?

There are 4 or 5 little pictures expressing different dangers, the only 2 I remember were toxic gas and unstable areas that you could fall thru. It was creepy enough looking down it not to mention trying to keep the rope out of any of that water since who knows what's in it.

The warning sign says -

Danger! Abandoned mine hazards:

• Unsafe mine shafts & Highwalls

• Deadly gas & lack of oxygen

• Unsafe ladders

• Unstable explosives

• Deep pools of water