What is a mountain?
v Subjective
v Roderick Peattie  Mountain Geography (1936)-
Mountains are 1) impressive, 2) enter into the imagination of
people living in their shadow, and 3) have individuality.
v Objective definition should include:
v Elevation (insufficient criterion, e.g., Great Plains)
v Local relief (Grand Canyon?, incised into plateau)
v Steepness of slope
v The amount of land in slopes
Whiteman