One of the strangest landscapes in Patagonia are the forests of tree skeletons. The burned bark of the beech tree known as the lenga in Chile (Nothofagus pumilio) turns white after the black char has weathered off, making them appear even more like bones. Fires are strictly prohibited in National Parks in Chile, partly due to the catastrophic forest fires that have burned through Torres del Paine National Park. The most recent fire was in 2011 when the flame from burnt toilet paper blew out of control in the strong wind that is characteristic of the area. The forests are slowly returning, and the pioneer species that carpet the land soon after the fire keep the ground green. For now, the aboreal carcasses remind any hikers or climbers not to start fires in the area.