When I was younger I watched a number of documentaries on Nuclear Weapons.
My favorite is "Atomic Cafe" which is mostly propaganda films.
Saw it on Discovery back when they played more than Mythbusters and shows about explosions.
Not that there's anything against them.
The blast made a hole 328 feet deep and well over 1,000 feet wide. Radiation, unlike the American tests, stayed pretty much in the neighborhood, although some did get over Japan's airspace. It did successfully create Lake Chagan, which is still highly radioactive today, though people now swim in it because they're Russian and therefore don't give a shit about anything. Still, when compared with our radioactive mud rain, the Russians probably won that round.