
Beaver Valley, on the Delaware–Pennsylvania line
Beaver Valley cave
The cave is the society’s meeting place. Its scenes combine shots at the Beaver Valley rock shelter with sets built indoors.
The film’s cave was modelled on this one, which was then called Wolf Rock Cave.
It is the only formally recognised cave in Delaware, and reaches just 56 feet at its furthest point.
It has also been called Indian Cave and the Beaver Valley Rock Shelter. It was listed on the National Register of Historic Places on 1 September 1978.
Much of Beaver Valley lies in First State National Historical Park. The park’s Brandywine Valley lots are free; lot 2 is on Beaver Valley Road.
Park free at the Brandywine Valley lots of First State National Historical Park (lot 2 is on Beaver Valley Road) and walk in. The cave is on the National Register: leave it as you find it.


























