Spitzer color image of NGC 6357 complex (red: 24  μm, green: 8.0  μm, and blue: 4.5  μm). The 4.5 μm  and 8.0 μm  images are from GLIMIPSE survey. The 24 μm image is a combination of the images from MIPSGAL and MSX surveys. The three HII regions G353.2+0.9, G353.2+0.7, and G353.1+0.6 are labeled. The position of the Pismis 24 cluster is marked. The dashed lines depict the inner rims of the three bubbles identified by Churchwell et al. (2007).