Actually, this was an unnamed, unmarked valley a few miles before Tennessee Pass, on the I-70 side. We pulled off on a mining road, and snowshoed in along a valley with a river running through it. The snow was terrible for snowshoeing - deep, powdery, but with a 1/2 inch crust on top. You would take 5 or 6 steps on the crust, and then break through and fall over. It usually took 2 or 3 minutes just to get going again. It took us a long time to get anywhere, but we crossed the stream in the middle of the valley and headed up it about 2 miles. The coolest part of the trip was that at this point, we came across some old kilns of some kind. There were about 4 in a row, each one older than the last. They were about 20 feet high and 20 feet across, dome shaped, and kind of tan. Each one had been used until it collapsed, and then a new one was built next to it. Each had about 8 inches of soot built up on the inside. They were really neat, and we had lunch here, and then slogged our way back to the car. We speculated the kilns were used for smelting ore, but this was just a guess.