Calvert and Porter Woods

Calvert and Porter Woods
IUCN category V (protected landscape/seascape)[1]
Location within Indiana Show map of Indiana Location within United States Show map of the United States
Location	Montgomery County, Indiana
Nearest city	Crawfordsville, Indiana
Coordinates	40°01′23″N 86°43′19″W / 40.023°N 86.722°W / 40.023; -86.722
Area	40 acres (16 ha)
U.S. National Natural Landmark
Designated	1974

The Calvert and Porter Woods Nature Preserve is a 40-acre old-growth forest located in Montgomery County, Indiana, near Crawfordsville. Identified as a surviving fragment of virgin Central Hardwood forest, a woodland type that largely vanished in the 1800s, it was designated as a National Natural Landmark in 1974.^[2]