The Phibsoo Wildlife Sanctuary is the second-smallest national park in Bhutan, covering 268.93 square kilometres (103.83 sq mi) in western Sarpang District and southeastern Dagana District along the border with West Bengal. It is connected to Jigme Singye Wangchuck National Park and Royal Manas National Park via a "biological corridor" that crosses a national highway. Its elevations range from 200 metres (660 ft) to 1,600 metres (5,200 ft).