. Trongsa is a linguistically diverse district. In the north and east inhabitants speak
Bumthangkha, and in the extreme southeast
Khengkha is spoken.
Nyenkha is spoken in the western half of the district, straddling the border with
Wangdue Phodrang District. To the north, along and across the same border, live speakers of
Lakha. In the extreme south, the national language
Dzongkha is spoken. Across the mid-south, tiny communities of autochthonous
'Olekha (Black Mountain Monpa) speakers have all but disappeared. Historically,
Bumthangkha and its speakers have had close contact with speakers of
Kurtöpkha,
Mangduepikha and
Khengkha, nearby languages of central and eastern Bhutan, to the extent that they may be considered part of a wider collection of "Bumthang languages." Nyenkha, also related to the Bumthang languages, is more divergent while 'Olekha is only distantly related. ==Geography==