Site photography: Lake Wallenpaupack, PA — Photo by John Brighenti, CC BY 2.0, via Wikimedia Commons
Upper Delaware River — Photo by the National Park Service, public domain, via Wikimedia Commons
Delaware Water Gap — Photo by Famartin, CC BY-SA 3.0, via Wikimedia Commons
Beltzville State Park — Photo by JohnDziak, CC0, via Wikimedia Commons
Promised Land State Park — Photo by Yinan Chen, public domain, via Wikimedia Commons