What type of mounds is evidence of gopher activity?

Crescent mounds are characteristic indicators of gopher activity. These structures result from gophers pushing soil to the surface as they excavate their subterranean burrows. The crescent shape is formed due to the way gophers deposit the dirt, often creating a pile that curves around the entrance of their tunnels. This mound shape can help in identifying gopher activity specifically, as they have a distinct formation that differs from mounds made by other animals.

Other options like shallow, torn-up grass tunnels, volcanic mounds, and oval mounds might suggest different types of pest activity or natural occurrences. For example, shallow, torn-up grass tunnels could indicate activities from other burrowing animals, but they do not specifically reflect the classic mound structure associated with gopher behavior. This distinction makes crescent mounds a clear indicator of gopher presence.