Getting to Green Falls in the remote center of Baxter State Park requires about a 26-mile round trip hike — either from the west (via Wassataquoik Lake Trail from the Nesowadehunk campground) or the east (via the Russel Pond Trail from Roaring Brook, then the Wassataquoik Lake Trail). Worth the walk? I did it both ways, so I think so! (Wassataquoik Lake itself is worth the walk.)