Lake Hauroko is 462 metres deep which makes it between the 6th and the 23rd deepest lake in the world.

It is located in the south of the South Island between the similarly sized lakes, Monowai and Poteriteri and flows into Foveaux Strait via the Wairaurahiri River.

The lake is famous for Mary Island where a burial site was discovered in a cave and it contained the remains of a Māori woman. It is believed it was placed there sometime around 1660, the woman was laid to rest wearing a flax cloak and seated upright on a bier made of sticks. She is believed to be a chieftainess of the Ngati Moimoi tribe.

Lake Huroko