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To my knowledge, all popular routes in the United States require packing out all waste. Here are the rules for Yosemite, which has good guidelines applicable everywhere: http://www.nps.gov/yose/pl...
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To my knowledge, all popular routes in the United States require packing out all waste. Here are the rules for Yosemite, which has good guidelines applicable everywhere: http://www.nps.gov/yose/pl...