Snow tubing at the "Snowplay" area of Paradise inside Mt. Rainier National Park. Open from roughly January through March, this is the only legal area for sledding/tubing in the park. As a bonus, it is free other than cost of entry to the park.
Current U.S. military members and their dependents in the Army, Navy, Air Force, Marines, Coast Guard, and Space Force, as well as Reserve and National Guard members are eligible for a free annual pass.
www.nps.gov/planyourvisit/pas...