The Ark Initiative filed a lawsuit Sept. 5 contending that the U.S. Forest Service unlawfully granted the ski company permission to cut trees in what it maintains is a roadless area with special protection.
The company started removing dead and living trees last month after getting approval from the White River National Forest supervisor's office.
According to the Aspen Times, the court battle has temporarily stopped the ski company's work higher on the mountain.
(Copyright 2012 by The Associated Press. All Rights Reserved.)