Coastal and Mountain Terms Crossword

A 'wall' built with stone, rock and boulders to break up the wave.
Walls to spot sand from disrupting the river flow.
Deflects the waves energy.
Stop waves from hitting the beach from the sides.
Thing that causes earthquakes and mountains.
Highest mountain
Removal of small rocks, forming valleys and plataus.
Strongest support of rocks
apart of a arch but with the hanging bit off
Waves hit weak spots in cliffs revealing an indent
A strong vertical stack of rocks
A deposit of sand linking island to mainland
A curved build up of eroded material that forms at the mouth of a river
"A long, narrow sand bank"
A hill of sand formed by wind on the landward side of a beach