Cold Ash Quarry is a 0.4-hectare (0.99-acre) geological Site of Special Scientific Interest north of Newbury in Berkshire.

[3][4] The quarry is unique in Britain for the collection of fossil plants and insects which occur in a layer of silt and clay within the Reading Beds.

The fossils date to about 60 million years ago.

This is the only location in Britain at which fossil leaf-miner activity have been discovered.

[5] The site is private land with no public access.