Of bamboos and rats!
Mautam (த) is an extra-ordinary cyclical ecological phenomenon that happens in Mizoram. Once in 48 years, a particular species of Bamboo flowers here and, for reasons unclear yet, giant bandicoots start multiplying like hell. Understandably, this results in famine and plague. It seems Mautam has had a big influence on the political history of the region itself. It's being viewed with enough seriousness that the Indian Army has been pressed into service to combat rats!