Related Clues:
- Trick required to cross unspecified gorge
- Landform similar to a mesa
- Montana city whose name is a landform
- Echo location?
- American prison is over that ravine
- Swindle keeping some in deep depression
- It’s about an hour and a half drive from Bozeman
- Something emerging from the Grand Canyon's floor
- Mesa Verde National Park sight
- 'Devil's --', 1953 film starring Virginia Mayo and Dale Robertson
- Ravine identified by Tory touring a US state
- Criminal going around an unknown gorge
- Montana city SW of Helena
- Deep, steep, ginormous valley
- Often a river runs through it