Slice in the rock

We spotted the entrance to this cave from another cave in the area. It didn't look like much, but we thought we better check it out.
Just inside the round entry, the cave changes to a vertical crack.
Towards the back there is quite a bit of flowstone.
On a more adventurous day I might try to squeeze through this hole in the floor. I dropped a few rocks down it and you could hear them falling for several seconds.