The hardest problem here is getting a horse to move up and down while the loop keeps turning, and the maker handles it with a pole that travels over curved pieces as part of the mechanism. This is already the fourth version of the design, and I admire that kind of persistence.
The build is a continuous conveyor loop made from LEGO track elements, driven by an electric motor, with gray Technic liftarms and gears alongside standard LEGO bricks. A white horse on a Technic pedestal rides the moving track, and an elevated section carries two upright framed mechanisms in white and red. The route runs from the back, around the left bend, along the front rail, and through the right corner.
What stands out for me is the character of the running mechanism: it hums and clicks continuously through the lap. That steady mechanical soundtrack gives the whole thing a lively workshop feel in my view.
The maker is upfront that the build is still a bit janky, while noting it seems to work without exploding. With the aim of building a farm around power functions, this trot track reads as a promising piece of a bigger plan, and I would not be surprised to see a version five.