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Feature Definitions - Figure 4

Basic Elements:

Drop/Ledge - An instant and dramatic descending grade change that results in the tread falling away from the bicycle.

Jump - A jump is an undulation characterized by a sharp change in the curvature of the tread.

Derived Structures:

Accelerator - An accelerator is a short, steeper, descending section of trail formed from a partial roller, designed to increase momentum.