>>212577166Well, mountains on the Swiss Alps, the Himalayas and Chilenean Andeas would block atmospheric radioactive fallout working as natural climate geographical barriers, it already happen as a phenomenous on Taklamakan, where wet clouds reach there the high altitudes cold down then and condese the water into rain, which falls at Bhutan, Pakistan amd India, naturally irrigating the place, the clouds of radiaoactive dust would be flushed down back at the subcontinent by rain.