CF missing from NM

Over the summer I went on a river trip with friends near Laughlin, Nevada. The temperatures out in this desert area can exceed 100 F (38C) on a normal day but there is the river and lakes that keep people cool. There are several man-made lakes created by the dams on the river. On this trip we were on a boat and pulled into a cove. There were no other boaters around our group of 12, so we had the whole cove to ourselves.
I've done CFNM under "controlled" situations but have never been nude out in the open in front of other people who have no interest in me being naked. The standard attire at he river for women is bikini's and men wear shorts. During our stay in the cove, about 8 people went on the boat to ride the inner tube. Me and three others stayed behind. Behind the cove is nothing but desert and no other people for miles. I chose to go exploring out in the desert to see what I can find in some of the ravines created by water run-off. I have fantasized about being nude out in the open so I thought this would be a good opportunity. I wasn't concerned about people from my group showing up because they are more sedentary types and I'm more active. I was about 2 miles out and now they would never walk that far in the desert heat.
I wandered into a large ravine to see what was back there....and to be in a more secluded space. I completely undressed and was nude soaking in the sun. I have some natural tan pigment to my skin so I've never really laid out in the sun. Having all my skin exposed to the sun was a new experience. I could feel the heat on my body and was surprised how intense it was. My ass, hips and cock were feeling the hottest from the sun. I carried my clothes with me in one hand while i walked around and explored some of the secluded ravine. Then I decided I would start heading back. I got to the opening of the ravine and decided I would keep walking out into the exposed desert fully nude. I assume it was from the heat, but my cock was swinging from side to side as I've never felt before. I was flaccid but soon started getting swollen from swinging...and the excitement of being completely nude in the open...during the DAY. I continued walking and occasionally pulled on my cock just because. I got to a location I felt was getting too close so I put my clothes back on. I continued another mile until I reached our cove.
I've done nude outside before but never in such an exposed environment. Previous experiments were at night or in the bushes, etc.