Related Clues:
- Ground rent?
- Deep crack has appeared in many a mountain initially
- Sound good before illness returns
- Big opening
- Deep crevice
- Significant divide
- Water south of Galveston
- Yawning gorge
- It's hard to get across
- Grand Canyon, notably
- It might be yawning
- Some breach, a small gorge
- Deep sea inlet, as between Iran and Saudi Arabia
- Huge difference between viewpoints, say
- Charles Martel's heading for great breach