As per T26: Add Sanctuary to OpenStreetView, the relation exists for Firestone Sanctuary which lists it as a site for sub-buildings and the like: https://www.openstreetmap.org/relation/12235209

Continue the work done to refine Firestone Sanctuary sub-items, such as examples referred to in this comment: composting toilet block, outdoor shower, Festival Flat, Lemon Hill, and other locations that might be useful for visitors to know.