Boondocking, marked with a TREE SYMBOL refers to camping not in campgrounds. These sites are usually dispersed camping areas in National Forest or Bureau of Land Management administered areas.
Campground marked with a TENT SYMBOL Refers to any established campground. Sites need not have services of any kind to be included. At the moment, all established campgrounds including private campgrounds are included in this category.
Dump stations on the road (generally at travel centers) are marked with a FUEL PUMP SYMBOL. In-campground dump stations are not included at this time.