Blue Marsh Ski Resort (formerly named Crystal Mountain) was a small ski resort and winter sports complex that was located in Bernville, north of Reading, Pennsylvania. The area shut down operations in 2005.
Blue Marsh offered skiing, snowboarding, and snow tubing with seven lifts and tows, including a triple, a double, a T-Bar, and four handle tows. The area included a Half Pipe and All Terrain Park, the Big Tube Park, the Kinder Tube Park, and the Wolverine Raft Park. Night skiing was offered every day except Sunday. Blue Marsh had a vertical of and about a dozen trails, the longest being long. Blue Marsh marketed itself as being a great place to learn how to ski or snowboard, with reasonable lift ticket prices. In 2003, Blue Marsh offered an all-day (9 a.m. to 10 p.m.) weekday lift ticket for $25.
The owners of Blue Marsh ceased its operation at the conclusion of the 2005 ski season. On October 29, 2005, Blue Marsh held a public auction, selling ski equipment including Piston Bully Snow Cats, T-Bars, snow tubes, snowmobiles, lighting equipment, rental equipment, and china and glassware.
The resort is now bare, with little remnants left behind besides the old ski trails. All lifts and buildings were demolished with the exception of the former T-Bar Lift building at the top of the mountain and a few utility sheds located at the bottom.