It's the Yemeni island of Socotra, sometimes spelled Soqotra.
It's part of an archipelago in the Indian Ocean, in between the Horn of Africa and the Arabian Peninsula.
One-third of Socotra's plants are unique and not found anywhere else on Earth.
In the 1990s, a team of scientists studied the island as part of a United Nations biology survey. They discovered 700 endemic plants. For perspective, the only other places in the world that have this kind of biodiversity are Hawaii, the Galapagos Islands and New Caledonia.
Researchers believe that the plant species developed from the island's heat and drought alongside Socotra's isolation - it's 150 miles from the nearest landmass - are responsible for the plants.
The resulting landscape is a combination of semi-desert and tropical desert.
