Views in nature of wife getting fucked

We used to go camping in a park with a lot of stream cut canyons, and there were lots of places you could see the trail on the other side of the deep but narrow canyon.My wife always has always been turned on by being seen while being the slut.So many hikers got a view of her bent at the wast getting it from behind while sucking the other. We would wait till a group of young guys were in sight then start. we did that sort of thing at that park a few times every year for along time with out any complaints, even from the nearby campers around our tent that could hear two guys fucking one girls brains out most of the night. On the way to the park we'd stop under a bridge where cars on the main road could see us fucking her on the hood of the car.