What specific geological features serve as important refugia for plains hognose snakes in South Dakota?

Answer

Sandhills and areas along the Missouri River Valley

In South Dakota, populations are documented inhabiting the drier, sandier regions, specifically mentioning the sandhills and locations bordering the Missouri River.

What specific geological features serve as important refugia for plains hognose snakes in South Dakota?
habitatreptilesnakehognose