Most other long exposure threads are restricted and limited by camera, lens or subject. There needs to be a general one in which people can post without having to fit any other category except long exposure.
Here’s an old one which I have probably posted somewhere at some time but memory fails so here it is again.
I've probably posted these in previous years but would like to post them in this thread if only to demonstrate the fruits of 4 policies I decided upon in respect to long exposure which were 1) never shoot long exposure off the cuff, go out specifically to do it, 2) know exactly where you're going to go, 3) always use a tripod and 4) trust the camera and lens, if you can’t do that, don’t do it.
I've posted these before, but it's one of my favorite spots. It was very cold that day and I had to take some significant risks to get to this remote location. I didn't even have to move the tripod; the first image is facing downstream, the second image facing upstream. Holly River State Park in Webster County, WV, USA.