The Blackfoot-Jackson basin contains the largest concentration and the largest glaciers in Montana’s Glacier National Park. According to a scientific study started in the 1990s, the park could lose even its largest glaciers by 2030.
This animation, using images from the Landsat 5 and 8 satellites, shows the glaciers’ retreat from 1984 to 2015.
The blue in the images above represents “permanent” snow and ice. The red in the southeast corner is a burn scar from the Thompson forest fire.
Research ecologist Daniel Fagre says that as time goes on, these once massive ice features will become “small insignificant lumps of ice on the landscape.”
“These tiny remnants could last 10 to 15 years past that time if they are in sheltered places, but the park will no longer really have viable glaciers,” Fagre says.
Worldwide, melting ice has been one of the clearest indications of long term climate change.
More Must-Reads from TIME
- Biden Drops Out of Presidential Race , Endorses Harris to Replace Him
- Why Biden Dropped Out
- The Chaos and Commotion of the RNC in Photos
- Why We All Have a Stake in Twisters’ Success
- 8 Eating Habits That Actually Improve Your Sleep
- Stop Feeling Bad About Sweating
- Welcome to the Noah Lyles Olympics
- Get Our Paris Olympics Newsletter in Your Inbox
Contact us at letters@time.com