https://animals.mom.me/identify-snake-holes-ground-7886.html

While it is true that snakes often hide in holes, they do not construct their holes themselves -- these are primarily the former holes of rodents, turtles and frogs.

http://icwdm.org/inspection/GroundHoles.aspx

Ground Hole Identification. This section deals with actual den holes not divots or depressions in the soil. If you are dealing with divots in the soil then click here.

https://www.terminix.com/blog/home-garden/snake-holes-in-yard/

Learn how to help identify snake holes in your yard. Snakes may be on top ... Holes in your backyard could be the openings to snake burrows. What exactly ... You may be wondering, “What do ground squirrels eat that attracts them to my yard?

http://www.snake-removal.com/holes.html

There are some snake species that spend most of their life in holes in the ground, going out only to get food and to sunbathe to increase their body temperature.

https://www.hunker.com/12146201/what-does-a-snake-hole-look-like

Mar 14, 2018 ... Because snakes can't dig holes, they often live or take shelter in other animals' ... which is why you often see them slithering out of the ground.

https://www.crittercontrol.com/services/snakes/snake-holes

Unless homeowners witness snakes entering or leaving holes in the ground or trees, it is foolish to assume a pit or tunnel is strictly inhabited by a snake. Actually  ...

https://homeguides.sfgate.com/holes-ground-mounds-77215.html

One such clue is a hole or series of holes in the ground. ... Rattlesnake venom does not become poisonous as the snake reaches adulthood; it already is ...

http://www.walterreeves.com/insects-and-animals/diagnosing-holes-in-the-yard/

“How do you folks answer questions about what's digging holes in a yard? ... If moles, ground bees, chipmunks, and the neighbor's dog are ruled out, what's left ?

https://www.youtube.com/watch?v=h1M4gcm-gt8

Jul 18, 2013 ... Here is a video we took a few years back with my old phone of a hole in the ground full of garter snakes.

https://www.gardenweb.com/discussions/2241897/do-snakes-live-in-those-holes-i-see-in-my-garden

Oct 14, 2005 ... I can't figure out how a snake would dig a hole, but everytime my ... I, too, was told as a child that every hole in the ground was a "snake hole".