The method of clearing a ski run can be the difference between a permanent scar on the mountain and a healthy landscape February 20, 2017 By Zach St. George PHOTO: Hank de Vre We’re on a mountain, but at the moment skiing is a distant abstraction. I’m sweating through my shirt and pining for sunscreen, following Jennifer Burt as she leads the way through shoulder-high brush. “In retrospect, maybe I should’ve brought you up the trail,” she says. We’re at Powder Bowl ski area, north of Lake Tahoe, hiking up the middle of a run—if you could even still call it that. One of dozens of abandoned ski areas scattered around the Tahoe Basin, Powder Bowl closed in 1984. If Burt wasn’t here to tell me, I’d have been hard-pressed to pick out the run from the surrounding forest. But that’s kind of the point. Burt, 40, a restoration ecologist, has been studying how ski slopes regenerate—that is, how they return to their pre-ski-run condition—since 2005, when she was studying fo