Bahrain is a generally flat and arid archipelago in the Persian Gulf. It consists of a low desert plain rising gently to a low central escarpment with the highest point the 134 m (440 ft) Mountain of Smoke (Jabal ad Dukhan).[124][125] Bahrain had a total area of 665 km2 (257 sq mi) but due to land reclamation, the area increased to 765 km2 (295 sq mi), which is slightly larger than Hamburg or the Isle of Man.[125]