库苏古尔省
Darkhad (also "Darkhat") is a dialect in-between Central Mongolian and Oirat still variously seen as closer to Oirat or as a dialect of Khalkha Mongolian with some Oirat features. However, it seems to have substantially assimilated to the Khalkha dialect since it first was described by Sanžeev, and some classificational differences seem to be due to what historical (or even ideal) state got classified. A population of 20,000 was reported in 2000. Speakers live mainly in the west of Lake Khövsgöl in the sums Bayanzürkh, Ulaan-Uul and Rinchinlkhümbe in the Khövsgöl Province of Mongolia.