I've only ever had mine on gravel and forest roads as well, with very minor rocky terrain. It does fine, but obviously gets bounced around quite a bit. Have fun on your Mont Radar trip!I had it for 2 years and no problem towing it. I find the metal top cover is havie but it is solid. It's good on roads and gravel roads I did not tried it on rocky terrain ( like a Montain ) but I will do it this year I'm going to Mont Radar ( OPEN TRAIL - Domaine du Radar ) I will try it with the tent trailer.