Positions of LMC SNRs (red circles) on the H i column density map of Kim et al. (2003), displayed on a linear scale ranging from 0 to 6 × 10²¹ cm^-2. Black and blue contours indicate levels of 1 and 3 × 10²¹ cm^-2, respectively. The green contours are the 3σ level (1.2 K km s^-1) of the velocity-integrated map of ¹²CO (J = 1−0) from the NANTEN survey (Fukui et al. 2008). The position of the SGS LMC 4 is marked with a dashed black circle.