Tunnels converging
The perfect defensive spot
Nooks and turns
Great Lake
Chute
Cave features
Ramp, Ledge, Corridor
No bridge needed
Treasure map
I made a 1d6 table of random rooms for a game I'm working on
A stream and a crack
Wild, wild west
More spelunking
Dungeons & Ruins & Caves
Downstream
Caves, caves, caves
Gotta make a ton of tiny cave pieces
Magnetic cave tiles
Magnetic dungeon tiles
A staple of dungeon design