CHAGOS, a group of atolls in the Indian Ocean, belonging to Britain, disposed in circular form round the Chagos bank, in 4° 44' t o 7° 39' S., and 70 55' to 72° 52' E.
The atolls on the south and east side of the bank, which has a circumference of about 270 m., have disappeared through subsidence; a few - Egmont, Danger, Eagle, and Three Brothers - still remain on the east side, but most of the population (about 700) is centred on Diego Garcia, which lies on the south-east side, and is nearly 13 m.
It comprises a large number of low coralline islands and atolls, which are disposed in nine clusters extending over a distance of about 400 m.
It consists of seventeen atolls with an immense number of islands, of which some three hundred are inhabited.
In the extreme south are the isolated atolls of Addu and Fua-Mulaku, separated from Suvadiva by the Equatorial Channel, which is itself separated from the main chain of atolls by One-and-ahalf-degree Channel.'
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