Dust temperature (colours in a) and contours in b)) and column density (colours in b) and contours in a)) maps of the central part of the Mon R2 molecular cloud complex, covering the central, western, eastern, and northern H ii regions with 36″ resolution. The heating sources of H ii regions are indicated by a cross and with their name taken from Racine (1968) and Downes et al. (1975). Smoothed temperature and column density contours are 17.5, 18.5, and 21.5 K and 7 × 10²¹, 1.5 × 10²², 5 × 10²², and 1.8 × 10²³ cm^-2.