National park, southeastern Alaska, U.S. Proclaimed a national monument in 1978, the area underwent boundary and name changes in 1980.
The largest park in the U.S. national park system, it has an area of 12,318,000 ac (4,987,000 ha). At the convergence of the Chugach, Wrangell , and Saint Elias mountain ranges, it includes the largest assemblage of glaciers and the greatest collection of peaks above 16,000 ft (4,880 m) on the continent.