332S is one of the new omnibus maps from Green Trails, printed on waterproof, tear resistant paper. The larger page size allows this map to expand the area covered by the older 364S map. This map includes most of the areas covered by 332 Spirit Lake and 364 Mount St Helens, as well as western approaches not covered by either of those earlier maps. An inset shows road approaches from I-5, SR 7, US 12, SR 504, and SR 503.

Map 332S centers on the Loowit Trail around the mountain, and shows all of the other trails within the National volcanic monument and the Mount Margaret backcountry.