Socotra

Socotra, a Yemeni archipelago in the Arabian Sea roughly 250 kilometres off the coast of the Horn of Africa, separated from the African and Arabian mainland for an estimated 6 to 18 million years, has developed one of the most distinctive endemic ecosystems on Earth — around a third of its roughly 800 plant species, and a significant proportion of its reptiles and birds, are found nowhere else. The island's most iconic species is the dragon's blood tree (Dracaena cinnabari), an umbrella-shaped tree that produces a deep red resin when its bark is cut, long traded across the ancient world as "dragon's blood" — used historically as a dye, varnish (including, according to some accounts, in the varnish of Stradivarius violins), and as a folk remedy believed effective against everything from dysentery to wounds.

The island appears in classical and medieval sources under various names, including possibly the "Dioscorida" mentioned by Greek geographers, and was for centuries a stop on Indian Ocean trade routes, leaving a legacy that includes one of the world's oldest continuously practised forms of an ancient South Arabian language, Soqotri (unwritten until recently and still not standardised), and a body of indigenous oral poetry. The island's otherworldly landscape — dragon's blood trees alongside bottle-shaped desert rose trees and towering limestone karst formations — has led to frequent comparisons with alien planets in popular media, even as the island faces growing conservation pressure from increased tourism, periodic cyclones intensified by climate change, and the broader instability affecting Yemen since the country's civil war began in 2014.