The Bally Peak Outlook Foundation's “8x8000m” Pledge Cleans Four 8,000-Meter Himalayan Mountains, Including Everest, While Honoring Local Communities. With the Bally Peak Outlook Foundation’s support, Nepali activist and mountaineer Dawa Steven Sherpa led a 47-day clean-up expedition to the base camps of Cho Oyu, Everest, Lhotse and Makalu, removing 2.2 tons of waste.