Taken in rural, northwest Arkansas, United States.
This is about two hours of star trails, composed of individual 30 second images. You can see a gap in the trails where I quickly had to correct a setting. The forest trees were light painted with a regular white LED flashlight for the first five minutes' worth of frames.
Other than stacking the individual frames, this is all straight from camera with no additional tweaking.
Nikon D7000 and a Rokinnon 8mm fisheye.