epfidemic

an island in India whose inhabitants don't know how to make fire and uses stone age tools.

and then… Even so, every few years there is a report of one “lost tribe” or another - usually in the Amazon rain forest or the highlands of New Guinea - staggering naked from the jungle into the dazzling glare of modernity. Such stories are almost invariably followed by a retraction: the tribesmen turn out to have T-shirts and cigarettes stashed back in their huts, and the original report turns out to have been a mistake or a fraud. (The most famous such incident was the so-called Tasaday hoax of 1971, involving a supposed Stone Age tribe in the Philippines; the tribesmen were Filipino farmers whom local politicians had coerced into posing as naked cave-men for the camera crews from CBS and National Geographic.)