Glacier National Park is one of America's original 10 national parks.
Unfortunately, it could lose its glaciers completely within decades.
Glacier National Park is over 100 years old now, but its terrain is rapidly changing.
The park may look very different in the next century without the glaciers, reports CNN.
The glaciers currently support the wildlife, farms, and people in the area.
The Montana park's officials are using the hashtag #GlacierMovingForward to discuss on Twitter.