Tortola is the largest and most populated island of the British Virgin Islands, a group of islands that form part of the archipelago of the Virgin Islands. It has a surface area of 55.7 square kilometres with a total population of 23,908, with 9,400 residents in Road Town. Mount Sage is its highest point at 530 metres above sea level.

The British Virgin Islands (BVI), officially the Virgin Islands, are a British Overseas Territory in the Caribbean, to the east of Puerto Rico and the US Virgin Islands and north-west of Anguilla. The islands are geographically part of the Virgin Islands archipelago and are located in the Leeward Islands of the Lesser Antilles and part of the West Indies.