Related Clues:
- Deep opening in the earth's surface
- An annoying Scotswoman heard in this pit
- Notable gap
- Ground rent?
- Deep crack has appeared in many a mountain initially
- Big opening
- Deep crevice
- Significant divide
- Yawning gorge
- It's hard to get across
- Grand Canyon, notably
- It might be yawning
- 'In the dark backward and ___ of time?': Shak
- Some breach, a small gorge
- Huge difference between viewpoints, say