The contour maps show water depths and nearby main roads.
A contour map of this magnitude can be located from the survey engineer.
"It's like the land is a contour map of itself," Simon said.
"It is an accurate contour map of the region as seen from my station."
A contour map showing a quarter of the continent opened in the air before them.
In the last few weeks he'd taught her how to build a fire, scale a fish, pitch a tent, and read a contour map.
Obviously, this is not how actual contour maps are made.
A three-dimensional contour map appeared in midair over the table.
A color, contour map of the district is here.
