Astronaut Thomas Pesquet captured from ISS Diego Garcia, an island of the British Indian Ocean Territory, a disputed overseas territory of the United Kingdom also claimed by Mauritius.
It is a militarized atoll just south of the equator in the central Indian Ocean, and the largest of the 60 small islands of the Chagos Archipelago. Portuguese sailors under Pedro Mascarenhas were the first Europeans to discover the island, finding it uninhabited in 1512. After a 1786 British colony failed, the French began using the island as a leper colony and, starting in 1793, coconut cultivation by enslaved labor. It was transferred to British rule after the Napoleonic Wars.
The local scenery on the ground is as follows.
Reference: Thomas Pesquet’s Tweet
See earthview photo gallery: LiVEARTH