LIFEDelaware's only caveSee the state's only cave in the Beaver Valley part of the First State National Historic Park. www.delawareonline.com/story/life/2018/08/24/delawares-only-cave-small-wonder-itself-just-56-feet-long/1088616002/Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border. The small cave extends just 56 feet to its furthest reach.Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border.Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border.Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border.Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border.Suchat Pederson, The News Journal-USA TODAY NETWORKGraffiti inside Beaver Valley Cave, Delaware's only cave, which sits just 100 feet from the Pennsylvania border. The small cave extends just 56 feet to its furthest reach.Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border.Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border.Suchat Pederson, The News Journal-USA TODAY NETWORKBeaver Valley Cave, Delaware's only cave, sits just 100 feet from the Pennsylvania border.Suchat Pederson, The News Journal-USA TODAY NETWORKThe back of the Beaver Valley Cave, Delaware's only cave, which sits just 100 feet from the Pennsylvania border. The small cave extends just 56 feet to its furthest reach.Suchat Pederson, The News Journal-USA TODAY NETWORK