The Finest Peaks Figure 8.2

Drop measure and cliff measure concepts.

The drop measure D of the green slope at left is a function of height h and slope s = h / d.
The cliff measure for an observer at point O on the mesa rim depends upon the viewing direction.
Looking radially outward (red arrow pointing left), the cliff measure C equals
the drop measure D for the green slope at left. Looking inward, C is zero.

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