Researchers in Michigan UP capture some interesting audio in camp

YouTuber D. A. Bozung posted a video featuring audio recorded at their camp in the Michigan UP. In the description it says that the recorder was set up all night but this audio was at around 3:30 in the morning. It starts out with an occasional knock sound but at around 2:26 there is a grunt-like sound and at 7:09-8:30 there is footsteps, heavy breathing and overall a ton of noise. Take a listen: