The Vale of White Horse is a local government district of Oxfordshire in England. It was historically a north-west projection of Berkshire. The area is commonly referred to as the 'Vale of the White Horse'. It is crossed by the Ridgeway National Trail in its far south, across the North Wessex Downs AONB at the junction of four counties. The northern boundary is defined by the River Thames. The name refers to Uffington White Horse, a prehistoric hill figure.