Rock Creek.

I call this photo, also taken in August 2019:

"Firewater - 2"

Not sure why, but after you cross an invisible barrier at the creek, you sweat. Only people who go down there are homeless crazy folks. And even they are very, very rare down there.

There is probably an ancient "jinn" in the creek.  My theory is the creek is the earth "jinn" or spirit of Washington DC - same "jinn" from pre-American days.