| Answer | Crossword Clue |
|---|---|
| tomo | a shaft formed by erosion of rock |
| tomos | TOMO, a shaft formed by erosion of rock |
| potholes | A deep natural underground cavity formed by the erosion of rock, esp. by the action of water |
| potholes | A deep circular hole in a riverbed formed by the erosion of the rock by the rotation of stones in an eddy |
| tomo | a shaft formed by the action of water on limestone or volcanic rock |
| bluffer | a steep promontory, bank, or cliff, esp one formed by river erosion on the outside bend of a meander |
