For example, although no one can know everything about the Grand Canyon, one person can know enough about the rock formations to be able to find water and the way out if left in an unknown side canyon. This sense of orientation allows the geologist to engage their imagination, to envision the outcrop. Geologists interpret the hidden depths. The geologist looks at a two-dimensional surface and sees three or four dimensions. Geologic vision is embodied knowledge, arrived at through walking the land, seeing the outcrop within its context of the landscape.
Geologic insight is a kind of walking meditation.