This surviving trial railroad trestle stands in Frenchman Lake, Yucca Flat. This bridge, the only remaining section of an elevated railroad, was located 1,800 feet from ground zero and received overpressures exceeding 450 pounds per square inch. The blast blew sections of the structure off the foundation and bent large I-beam girders. This detonation, code named "Priscilla," had 37 kilotons of force. By comparison, the blast at Hiroshima measured 13 kilotons. [Taken from the book Nuclear Landscapes, by Peter Goin.]