Proper noun
New Guinea Highlands
(geography) a long chain of mountain ranges on the island of New Guinea
A scientific colleague tells me about a recent trip to the New Guinea highlands where she visited a stone age culture hardly contacted by Western civilization. They were ignorant of wristwatches, soft drinks, and frozen food. But they knew about Apollo 11. Carl Sagan
The New Guinea Highlands range some convert east to west along the island, forming a mountainous spine between the north and south coasts. Source: Internet