Aspen Center for Environmental Studies:
Snow cave
Aspen Center for Environmental Studies:
Snow tunnel
Aspen Center for Environmental Studies:
Shoveling!
Aspen Center for Environmental Studies:
Winter Explorers
Aspen Center for Environmental Studies:
Birds of a Feather
Aspen Center for Environmental Studies:
Snow Nest
Aspen Center for Environmental Studies:
Snow Cave
Aspen Center for Environmental Studies:
Snow Cave
Aspen Center for Environmental Studies:
Ice ornament
Aspen Center for Environmental Studies:
Ice ornament
Aspen Center for Environmental Studies:
Snow scientist
Aspen Center for Environmental Studies:
Snow scientist
Aspen Center for Environmental Studies:
Snow scientist