In the north and east inhabitants speak Bumthangkha, and in the extreme southeast Khengkha is spoken.
Across the mid-south, tiny communities of autochthonous 'Olekha (Black Mountain Monpa) speakers have all but disappeared.
Wangchuck Centennial Park in the north (the gewog of Nubi) and Jigme Singye Wangchuck National Park in central, western, and southern Trongsa (the gewogs of Langthil and Tangsibji) are connected by biological corridors, all of which are protected areas of Bhutan.
Biological corridors also occupy substantial portions of the southeast and northeast, leading to Thrumshingla National Park in neighboring districts.
[7][8] Jigme Singye Wangchuck National Park preserves some of Bhutan's wildlife such as the Himalayan Bear and White Langur.