In National 5 Geography, revise the identification and formation of coastal landscape features caused by transportation and deposition.

Basically, cyclic steps are *erosional *features produced by supercritical flow, whereas sediment waves are *depositional *features produced by supercritical flow.

We show that the Hulopoe gravel was formed by multiple depositional events, separated by considerable periods of time, thus invalidating the main premise of the ‘giant wave’ hypothesis.