Caves is where one of the first settlement in Sarawak was found by archaeologists.
The earliest 'Niah Cave man' was traced to have existed between 35,000 to 40,000 years ago. Niah Caves is also one of the best tourist spot to visit in Borneo. They are concentrated in the Batang Lupar River Basin and Middle Rejang River areas, but Ibans can be found throughout Sarawak. I bans are also known as the 'Sea Dayaks' mainly for their expert seamanship. They are famous for their headhunting past when they were Borneo's most fearsome warriors.