Initial reports had it at 10km deep -- which would've been far too deep for a bomb test -- they've since been revised to 0km deep, which is what you'd expect fo

Initial reports had it at 10km deep -- which would've been far too deep for a bomb test -- they've since been revised to 0km deep, which is what you'd expect for a test beneath the surface. The 10km was interesting since if it held up, it would have likely ruled out a test, but it turns out that the first readings were wrong.