The Great Gorge of Alaska is completely filled with ice. Scientists have finally measured its depth. How did they do it? When researchers discovered the massive Ruth Glacier in Alaska's Great Gorge in ...

The Ruth Gorge in Denali National Park and Preserve. The Sheldon Chalet and Don Sheldon Mountain House sit on a rocky outcropping above the Ruth Glacier near the Ruth Gorge. The National Park Service ...

Ruth Glacier’s Great Gorge is quite simply one of the continent’s most awe-inspiring sights. At 2000 feet and over 10 miles long, it’s one of the deepest ...

M Jackson, a geographer and glaciologist who lives in Oregon, has written two previous nonfiction books, including “The Secret Lives of Glaciers.” She’s now applied to fiction her extensive knowledge ...