Ice Conditions (U.S. National Park Service)

Where Ice Meets the Ocean: Outer Coast Field Update for 2022 (U.S. National Park Service)

Winter Season - NPS Commemorations and Celebrations (U.S. National Park Service)

Ice Age National Scenic Trail (U.S. National Park Service)

America's 20 prettiest national parks in winter

Alaska Public Lands (U.S. National Park Service)

Glacier National Park

ParkPlanning - Frozen Lake Surface Access and Use Plan

National Park Service - Wikipedia

Investigative Services (U.S. National Park Service)

After the storms, Yosemite shines, while the waterfalls go nuts

Plan Your Visit - Crater Lake National Park (U.S. National Park Service)

Investigative Services (U.S. National Park Service)