- A property claim? Strange!
- A right of possession for extraterrestrial
- Being from outer space
- Exotic
- Exotic visitor?
- extraneous
- Extraterrestrial
- Artificial waterway
- Channel
- Duct
- First channel always narrow and long
- Is it possible for Mr Pacino to make passage?
- Man-made waterway
- martian feature
- Bomb hole
- Hole left by a bomb
- Hollow
- Large bowl-shaped cavity
- Lunar hollow
- Lunar landform
- Mad creator abandoned old depression