I spent 11 nights backpacking in Glacier National Park this summer (on two separate trips), and noticed that existing mapping of the campsites is minimal. Each site generally consists of several tent sites, a food preparation area with bear-proof storage (a pole for hanging or a bear box), a toilet, and usually a fresh water supply. Usually there is a schematic map of the campsite posted, like this one shown below.

While I was there, I took a number of photos of camp site maps (I have not been able to find them online from the National Park Service), and did quick GPS surveys of a few sites with my Garmin watch.

I have made a first attempt at adding a full backcountry camp site map for Hole in the Wall Camp in this changeset. My approach was:

• Place the camp itself at the main trail junction, usually where the camp map is posted, tagged as tourism=camp_site. This is the way camps are tagged in OSM now (locations are rather approximate).
• Map the paths between parts of the camp, tagged with highway=path
• Add each official tent site as a node tagged with tourism=camp_pitch
• Add the toilet with amenity=toilets. In the case of Hole in the Wall, tagged with toilets:disposal=chemical, but in most cases it will be toilets:disposal=pitlatrine.
• Tagged the food preparation area with amenity=bearproof_storage, bearproof_storage=hang. This one is not very standard, I followed an example from this forum post.

A few notes and limitations:

• The tent sites and kitchen don’t show up in the default rendering (paths and toilets do).
• Using the junction as the camp location isn’t entirely satisfactory, but you can’t tag a complex relation like all the paths, tent sites and toilets. The alternative would be to use an arbitrary polygon around the site, but that seems wrong because it doesn’t have boundaries.
• Likewise, the tent sites and kitchen area could be mapped as polygons, but that would take more effort to do accurately.
• The kitchen area usually could get tagged amenity=bench as well, but maybe that is odd to do to the same node as bear storage.
• Mapping water access with amenity=drinking_water, drinking_water=treated would probably be useful.

I think it would be useful to add more sites, but I’d like to make sure they are done consistently. I will likely try adding a few more examples for which I have good surveys.