End of solitude!
From the time I left the car at the parking area (I was the only car there), and hiking the 2+ miles to the Upper Falls, I had had this area totally to myself. Hadn't seen another soul.
After spending an hour or so hiking up to the falls, and another couple hours at the upper falls themselves swimming and photographing, I made my way back down the trail and was greeted with this mass of people at the base of the lower falls!!
I HAD been beginning to wonder WHY I hadn't seen anyone else all day .... it was a perfect summer's day, and a weekend day at that!!