Contains
- bank
A long ridge or pile; "a huge bank of earth".
- reef
A submerged ridge of rock or coral near the surface of the water.
- bar
A submerged (or partly submerged) ridge in a river or along a shore; "the boat ran aground on...
- dune
A ridge of sand created by the wind; found in deserts or near lakes and oceans.
- shelf
A projecting ridge on a mountain or submerged under water.
- esker
(geology) a long winding ridge of post glacial gravel and other sediment; deposited by meltwater...
- ripple mark
One of a series of small ridges produced in sand by water currents or by wind.