Cat Ba National Park, VIETNAM

Cat Ba is the largest of the 366 islands spanning 260 km2 (100 sq mi) that comprise the Cat Ba Archipelago, which makes up the southeastern edge of Ha Long Bay in Northern Vietnam. Cat Ba island maintains the dramatic and rugged features of Ha Long Bay, half of its area is covered by a National Park. The island has a wide variety of natural ecosystems, both marine and terrestrial, leading to incredibly high rates of biodiversity. Photos from October 2013