Coffee rock is the common name for the rock-like formations of indurated sands that were formed from ancient river sediments of the Pleistocene

Pleistocene

The Pleistocene is the epoch from 2,588,000 to 11,700 years BP that spans the world's recent period of repeated glaciations. The name pleistocene is derived from the Greek and ....

 age.
Coffee rock has been exposed by coastal weathering process on the beaches of Broadwater

Broadwater National Park

Broadwater is a national park in New South Wales, Australia, 577 km northeast of Sydney....

 and Bundjalung

Bundjalung National Park

Bundjalung National Park is on the north coast of New South Wales, Australia, 554 km north-east of Sydney. It protects an area of coastal plain, heathland and solitary beaches between the towns of Iluka and Evans Head....

 National Parks in New South Wales, Australia. In addition, exposures can be seen in South East Queensland

South East Queensland

South East Queensland is a region of the state of Queensland in Australia, which contains approximately two-thirds of the state population...

, Australia, on Fraser Island and at the entry to Coonowrin Lake, Caloundra.