Big Boulder - Jack Frost Ski Resort is a 3.4 mile moderately trafficked loop trail located near Lake Harmony, Pennsylvania that features a great forest setting and is rated as moderate. The trail is primarily used for nature trips, birding, and downhill skiing and is best used from October until March.

Distance: 3.4 miles Elevation Gain: 1,348 feet Route Type: Loop

nature trips


bird watching




Thu Mar 07 2019

Jack Frost has the best snow/snow making in PA. I ski here numerous times in the season, very few icy days. They have the best snowmaking and grooming by far. There's less challenge for many but for sheer cruising enjoyment it's great.

Mon Jun 10 2013

Skied here once and it was bad conditions. There were more bare spots than snow. I should not judge the area from one visit but I got the feeling they do not have much snowmaking capacity.