Detect grade or slope in passage
| 1-5 on 1d6
|
Detect new tunnel/passage construction
| 1-5 on 1d6
|
Detect sliding/shifting walls or rooms
| 1-4 on 1d6
|
Detect stonework traps, pits, and deadfalls
| 1-3 on 1d6
|
Determine approximate depth underground
| 1-3 on 1d6
|