ESTES PARK, Colo. — If you climb Longs Peak this summer, not only can you say you’ve summitted one of the state’s most iconic 14ers … you can also say you’ve seen an award-winning toilet.

The National Park Service first installed backcountry bathrooms along the Longs Peak trail in 1983. Since then, the the number of visitors to the park has doubled, and the toilets were so outdated ...

These toilets use worms to compost your poop, and they are our future. As park visitation grows, ... At Rocky Mountain National Park, llamas carry bins of waste down the Longs Peak trail.