Heading for some steep and deep on a socked-in day at Snowbird is bliss. And not just on the hill, mind you. At the Cliff Spa, a double-decker sanctuary atop the venerable Cliff Lodge, you can steep in a Fango (volcanic ash) hydro bath, then succumb to the rigors of a deep-tissue massage. If the weather holds, crank out some turns in the rooftop lap pool.If not, battle the elements with a moisture-boosting Skier’s Facial and a hot-wax pedicure. By the time the tram shuts down, you’ll be primed for some serious après-spa action. Wheatgrass cocktails, anyone?