 The Birdman cult which replaced the moai cult worship was concentrated in Orongo at a ceremonial site called Mata Ngarau.The location is at an elevation of , on a narrow ridge between the ocean, and the deep crater of Rano Kau volcano, which last erupted about 150,000 to 210,000 years ago.The earliest inhabitants of the island called it ""Te Pito o TeHenua"" (the navel/end of the world).