• pond surrounded by green brush, reflecting a distant range of snow-covered mountains that are dominated by one massive mountain

    Denali

    National Park & Preserve Alaska

Exploring Land Cover Change Through Repeat Photography

Exploring Land Cover Change Through Repeat Photography

Get a birds-eye view on Denali's changing landscape. Our partner's website contains a wealth of information about Denali's landscapes and allows you to view hundreds of matched historic/current photographic images that help us document and understand ecological changes occurring in the park.

Consider also taking a more focused virtual tour of landscape changes in Denali.
 
About the Project

The Denali Repeat Photography project has assembled more than 200 photo pairs taken across a large cross-section of Denali from the low-lying black spruce forests to ice fields high in the Alaska Range. What unites these disparate images is that they show repeated views of a single location at different moments in time. The interval separating the pairs of photos varies greatly - from just a few years to longer than a century!

Some of the images reflect major changes that have occurred in the physical landscape such as shrinking of huge glaciers or changes in the size of lakes or ponds. Other photo pairs show changing patterns of vegetation such as the establishment of spruce trees in formerly treeless areas or shrubs invading wetlands, and some show changes humans have made by building structures and roads. Still other photos show no apparent change at all over long spans of time.

The website serves as a clearinghouse of visual information about the wonderful and dynamic Denali landscape. The photographs have come from many different people and sources - from historical collections, longtime Denali researchers, and students visiting the area for the first time.

Did You Know?

scenic image of a green plain bisected by a thin river, mountains and clouds in the distance

Cold temperatures limit trees from growing at high elevation in Denali. Warmer temperatures, however, have led to woody vegetation growing at ever-higher elevations. Treeline changes are a conspicuous sign of climate change.