Averaged velocity maps of ¹²CO J = 3−2, ¹³CO J = 3−2, and HCO⁺J = 4−3 emissions between 42 and 48 km s^-1. The boxes represent the region mapped with the ASTE telescope. The cross indicates the position of the MSXG52. Contours levels are at 1, 2, 3, 5, and 7 K for ¹²CO J = 3−2, at 1, 1.5, 2, 2.5, 3, 3.5 K for ¹³CO J = 3−2, and at 0.4, 0.6, 0.9, and 1.2 K for HCO⁺J = 4−3. Color scale runs from 20 to 150 MJy beam^-1.