Chagos Archipelago

Definition/Scope: Island group, a major geographic feature of the British Indian Ocean Territory, located in the central Indian Ocean about 1,000 miles south of the tip of the Indian subcontinent.

Broader Terms:

British Indian Ocean Territory
Indian Ocean islands

Narrower Terms:

Danger Islands
Diego Garcia
Egmont Islands
Peros Banhos Atoll
Salomon Islands
Three Brothers