1970 coachman

Something like that sitting for 33 years may not be road worthy. Pull it out from where it sits and on hard ground, or preferably pavement. Then you can inspect the running gear and condition of the frame. It is entirely possible, even probable, that the frame, hitch, springs, axles, etc, have deteriorated to the point it is not safe to be on the road, and repairs are not feasible.

I would not crawl under it until it was move to avoid a medical emergency with the snakes.