146
On a camp site only accessible on foot
(lemmy.ca)
Went to a camping in the Laurentians in Québec (Ste-Agathe) and there were those things near some camp sites. The sites are only accessible by footpaths. No car access. And if you bring a bike, you have to walk it up a hill, so I doubt they are bike racks.
Plywood wouldn't stop a bear, but it might stop raccoons or foxes. Could be some type of locker for a cooler or icebox.