They drink from small pools of water or streams.
On the floor! E.g. in hollows where dripping water can accumulate. Often in streams as in surface streams. Or as "gour pools" (aka in USA, I think, "rimstone pools") - formed by calcite deposits forming natural weirs in the trickle of water flowing through them. These can be very beautiful.
They get moisture from their food - also they will (if necessary) seek out pools, streams etc to drink from.
Streams can slowly join together to form rivers.
Raccoons get their water from streams, rivers, lakes, puddles, pet bowls, ponds, and swimming pools.
Sure. There are natural pools and streams created by the water that made the cave in the first place.
Streams that are first forming.
Streams that are first forming.
Varicose veins form when blood pools in the veins.
weathering
Most wild animals get water by simply drinking it from pools and streams. A few get it as moisture from plants they eat.
Freshwater ponds, lakes, and marshes. Sometimes found in pools of slow moving streams. However, they are often absent in habitats with fish.