Stupid question about DUMBs. The ground heats up at about 50 degrees F per km down. So the tunnels often said to be at 10 km would be about 500 F. Some kind of quantum cooling built into the structure?
Stupid question about DUMBs. The ground heats up at about 50 degrees F per km down. So the tunnels often said to be at 10 km would be about 500 F. Some kind of quantum cooling built into the structure?