It was a contour map, giving the hills, sand reaches, and groves.
Levelling may be read from a contour map, if there is such available.
He was a thin little man with a face as wrinkled as a contour map of South America.
We did not need the contour map to know that some of these heights exceeded Yosemite's.
Little ridges covered his countenance as if it had been a contour map of a mountainous country.
A contour map in colours such as Bartholomew's "half inch" is a great help in this matter.