Moraki boulders lie on the beach close to the small village of Moraki, on the Waitaki coast.
As the sea erodes the cliff, the boulder slowly emerge until the erosion causes them to fall to the beach below.
A major tourist attraction for the region, the boulders attract visitors from across the world.
The boulders are concretions , a hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles. Occasionally, concretions contain a fossil, either as its nucleus or as a component that was incorporated during its growth but concretions are not fossils themselves.