The eastern half of Trás-os-Montes, corresponding to the District of Bragança, is divided into two distinct territories: Terra Fria Transmontana and Terra Quente Transmontana. The municipalities of Terra Fria include the municipalities of Vinhais, Bragança, Vimioso and Miranda do Douro.
Despite the names, the average temperatures recorded in the two territories are very similar, serving this division more in terms of morphology than in terms of temperatures. However, it is still true that in the mountains of Terra Fria there are the lowest temperatures of the Northeast Trasmontano, and even Portugal.
The Northern Interior of Portugal constitutes the territory that since the Low Middle Ages has been called Trás-os-Montes. Its extension and variability make it possible to distinguish different geographical units within it, which is why, since the end of the 19th century, some proposals for regional division have been produced, which, however, have not aroused unanimity (cf. Lemos, 1993, Ia, p. 85-87).