Group has been collecting waste from the trail for the past three years now
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/trekkers-collect-2127kg-waste-roopkund-himalayas
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-news-analysis-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttaranchal-uttarakhand
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/himalaya
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-recycling
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-management
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solid-waste