The term copper hoards refers to different assemblages of copper-based artefacts in the northern areas of the Indian Subcontinent that are believed to date from the 2nd millennium BC. Few derive from controlled excavations and several different regional groups are identifiable: southern Haryana/northern Rajasthan, the Ganges-Yamuna plain, Chota Nagpur, and Madhya Pradesh, each with their characteristic artefact types. Initially, the copper hoards were known mostly from the Ganges-Yamuna doab and most characterizations dwell on this material.