Snoqualmie Pass consists of two discrete ski resorts.
Summit At Snoqualmie
Offers mostly terrain that varies from beginner to intermediate.
Offers everything from beginner to deadly (quite literally) terrain. The in-bounds area at Alpental contains a several-hundred foot tall cliff that's pretty great to ski off of, but check the landing for plenty of snow first, and do this only if you're an expert skier. Pay attention to, and believe the double black diamond signs. The Alpental backcountry is quite impressive and readily accessible; make sure to obtain a Backcountry Pass from the Ski Patrol (at their Shack atop Chair 2) before exploring. Drive east on Interstate 90 from Seattle, approximately 1 hour. The road is an active interstate highway, and is therefore plowed and sanded all winter long, but snow tires or chains may be required.