Tendong Lho Rumfaat (Prayer of the Tendong Mountain) is a festival of the Lepcha people of eastern Nepal and north-east India. The festival occurs usually in the month of August. According to Lepcha belief, their ancestors went atop the Tendong Mountain to escape from 40 days and 40 nights of continuous rain. This festival commemorates that happening.
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Tendong Lho Rumfaat Wikipedia(Text) CC BY-SA