Room: A Warm Tunnel
This room is within Hellbent Mountain.
A Warm Tunnel - - - (-------------------------------------------------) - <---(M)---> E - - - This relatively wide passageway is also much hotter than the chambers nearby. At this point the tunnel drops off sharply, forming an almost completely sheer cliff to the northwest. You can see that the tunnel continues on at the bottom of the cliff, and that it should be safe to climb down.