Delicate Crumbling Floor
Level 3HazardHazardMediumLegacy
AC
22
HP
52
Speed
0 ft.
Perception
+0
Fort
+15
Ref
+9
Will
+0
Stealth
+13
Recall Knowledge DC 18 (arcana)
Disable DC 20 acrobatics (trained) to safely navigate the wet floor without stepping on any loose masonry or DC 22 thievery (expert) to cause a controlled collapse without any danger to the PCs.
At a cursory glance the tunnel appears to be little more than a waterlogged chamber.