Yucca Flat is a closed desert drainage basin, one of four major nuclear test regions within the Nevada Test Site (NTS), and is divided into nine test sections: Areas 1 through 4 and 6 through 10. Yucca Flat is located at the eastern edge of NTS, about ten miles (16 km) north of Frenchman Flat, and 65 miles (105 km) from Las Vegas, Nevada. Yucca Flat was the site for 739 nuclear tests – nearly four of every five tests carried out at the NTS.
Yucca Flat has been called “the most irradiated, nuclear-blasted spot on the face of the earth”. In March 2009, TIME identified the 1970 Yucca Flat Baneberry Test, where 86 workers were exposed to radiation, as one of the world’s worst nuclear disasters.