Rikoriko Cave is the world's largest sea cave in Maroro Bay on the
north west side of the Poor Knights island. Rikoriko means waning light
in Maori, or twilight.

The sea surface inside is roughly a hectare. The cave is 130 metres long,
a depth below water of 26 metres, and a height to the ceiling above water of
35 metres, and a width of 80 metres.

The cave is renown for its amazing acoustics Twenty years ago TVNZ Wild South were
filming “Deep Blue” and Herbs played their music inside the cave.

Wade Doak had submerged audio mikes in the water transmitting live sound, and dolphins
entered the cave and swam to the music.

Neil Finn performed uncut in this natural auditorium.

The latest live performance was an electronic band called Pitch Black who
performed for the Minister of Conservation during 2003 Sea Week. There were
10 boats inside the cave with over 100 people, in the water, and under the water.

Gregorian Chants, Maori haka challenges, opera singers, Swiss yodellers, Irish folk
singers, and didgeridoo players too! All have made impromptu performances inside this
cave.

A Guinness Book of World Records claim has been logged.