6 requires 4wd stops across the guide.
A silver camp at 11,200 feet where the Animas River's three forks meet, with the 1879 Duncan house and its bay window still standing on the Alpine Loop.
A massive dome of exposed rock layers with slot canyons and natural bridges
The throat of a vanished volcano made of rock from the mantle, standing over a fifty-five-mile river of dunes that crosses the Continental Divide.
A jaw-dropping backcountry road through slot canyons to Capitol Reef
A massive double arch named for the National Geographic Society president
A dead-flat lakebed where rocks leave trails behind them, twenty-seven miles down a tire-shredding road.