As an OSM contributor and a DoE Expedition Supervisor, I think this would make an excellent service section. If your assessor needs help gathering evidence of your contribution, you can see all your edits at

https://www.openstreetmap.org/user/**username**/history

and you can get your total edits to report back.

Perhaps your could work on how accessible paths are? Mapping steps, number of steps and whether there are handrails? Good luck!