If you are heading to Winter Park or want to do some backcountry skiing, you can park at the top of the pass at Berthoud Pass. There is a warming hut there you can use as well. If you want a smaller resort, you could camp at the Boulder Adventure Lodge and head to Eldora to ski. Otherwise, there is a vast amount of National Forest land where you could camp, especially between Keystone/A-Basin and Montezuma and also off of Hwy 9 between Breckenridge and Fairplay. - Bill