Big Hollow

National Natural Landmark

IN BRIEF
Big Hollow is a 40-square mile wind deflation basin scoured out by high winds during a prehistoric dry period. The hollow represents a classic case of “topographic reversal” and is the largest demonstrable example of its type in the 48 contiguous states. The site has typical natural wind-swept high altitude vegetation and examples of salt- and selenium-tolerant species. Ownership: Federal, private.

DESIGNATION DATE
1980