This is a unique way to bring a path up a hill. It is part of New York's Erie Canal Trailway which when finished will be 340+ miles long from Buffalo to Albany. It is just over half complete now. NY has for the most part done an excellent job on the trailway. The ramp is at Erie Canal lock 17 near Little Falls NY
I rode up and down on my touring bike, it is a bit tight with panniers on. I can't wait to try it on my tandem. There is a through option ( at the right of the picture)which is a steep ramp connecting each of the switchbacks.