The Go Waterfalling page on Gabbro Falls (located in the western UP near Blackjack Mountain) begins:
Gabbro Falls is on the Black River and is as impressive, if not more impressive, than its more celebrated neighbors downstream along the Black River Scenic Byway. This is a largely wild waterfall with no fences or barriers of any kind. It consists of three separate drops. When the water is high there is a fourth drop that is the height of the other three combined. The main drop falls into a narrow crevice between two large rock formations.
Gabbro Falls is relatively easy to find but there is some confusing information out there. The waterfall is also known as Baker’s Falls, and it is often mistakenly called Garbo Falls (gabbro is a type of rock). There is also a Neepikon Falls upstream, but it is just an unremarkable rapid. (read on for detailed directions)
Many more Michigan waterfalls on Michigan in Pictures!