At the next landing water erosion has caused the tile wall to collapse.

Right next to the canyon was a big crater, half a million years old, with no trace of water erosion.

There is a multitude of caverns created by water erosion.

The canyons have been and continue to be carved from the land primarily by water erosion.

Val d'Enfer, is a valley cut into the rock by water erosion.

"Do you suppose this whole bridge could be hollowed out by water erosion?"

The location of the southern gate can not be precisely determined due to water erosion.

None of those showed the least sign of water erosion.

These are possibly from ancient mining or could be natural caves caused by water erosion.

Being young, it does not display water erosion on its rim.