I stopped at Osgood Swamp — which frankly wasn't very interesting — on my way to Pyramid Creek. From the Pyramid Creek/Twin Bridges trailhead, I hiked up to Horsetail Falls, then scrambled up the left (west) side of the falls to Avalanche Lake, which is at the southern edge of Desolation Wilderness (map). Later that day, I drove to the Nevada side of Lake Tahoe and visited the relatively secluded east-side beaches that are on U.S. Forest Service land.