While the “International Community” puts pressure on North Korea and Iran to stop working on nuclear technology it is interesting to see what members of the IC have done to parts of the planet themselves.
This is the nuclear testing ground in Nevada and according to Wikipedia these are subsidence craters. During the 1950s, mushroom clouds could be seen from the city of Las Vegas and Americans headed for Vegas to witness the distant mushroom clouds that could be seen from the downtown hotels. It must have been amazing! Sitting on a hotel balcony on a hot Nevada night with a cold beer in your hand and watching the bombs go off! And no adverts!
I guess it is no surprise that these craters lay around 20kn southwest of the infamous Area 51.