Left: integrated intensity () map of C¹⁸O showing the distribution of the dense gas in B59; centre-left: ¹³CO channel map at v = 3.7 km s^-1 (slightly red-shifted with respect to the cloud’s ambient velocities of 3.5 km s^-1), tracing the intermediate density gas, and showing some of the cavities discussed in the text; centre-right and right: ¹²CO channel maps at v = 4.8 km s^-1 and v = 2.1 km s^-1 respectively, illustrating the red-shifted and blue-shifted outflows of the region. The position of the two position-velocity (P-V) diagrams of Fig. 11 are shown as white arrows and labeled as PV 1 and PV 2 in the four panels.