What do rapid increases mean on a topographic map?

Answer 1

This indicates steeply ascending or descending terrain. The distance between the lines indicates different elevations, so lines that are closer together indicate steep places while lines that are farther apart indicate smoother terrain.

Answer 2

Rapid increases on a topographic map typically represent steep slopes or elevation changes in a relatively short distance. These rapid increases can indicate areas of challenging terrain for hiking or potential hazards such as cliffs or waterfalls.