Yo I heard you like trains that go through snow…
That’s a Union Pacific Rotary Snow Plow. 17 feet / 5.2 meters tall. 150 RPM. It’s not self-propelled and had to be pushed by 4 locomotives. It was used in Wyoming up into the 1990s to cut 14 foot / 4.25 meter wide paths through the snow.
It was pretty old, I think from the 50s or 60s.