From Nicobarese Folklore
Once upon a time the people of Malacca (a village on Car Nicobar) used to go down to the underworld through a narrow passage. It was dark in the passage, so they needed coco-nut-leaf torches.
Down there, lying on the soft grass, they found lots of eggs belonging to the “little folks” who lived down there. Every time they went down, the people of Malacca would steal these eggs.
On one occasion they came across the “little folks” and said to them, “Where are your parents?” “We are the old folks,” was the answer. Then the people of the upper world (from Malacca) challenged the “little folks” to a dancing competition; and the dwarfs did not come off second best.
But the people of the upper world were never able after that occasion to go down there again and to steal the eggs; for the dwarfs blocked the way with the spathe of betel-nut, which turned into stone.
They never come back again nowadays, for there is no road.
Source:
In the Nicobar Islands, George Whitehead, 1924
Kotharian Lightning 