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.
EDIT: I have sent an email to the park and they have been kind enough to reply. It's just a type of fireplace with a grate. They didn't give more info than just this. Thanks to everyone for pitching in!
The important question is how did it get there? That thing is going to weigh a ton (metric, as it's in Canada) and if you can't scoot it up there in a vehicle, then that's a logistical problem all in itself.
Tonne?
Hey, I'm lazy. But you are correct.