'Appalling' toilets and rule-breaking as US shutdown hits national parks

Deaths reported at several sites amid staffing shortages, as local teams lend a hand at Yosemite, the Grand Canyon and elsewhere

Human waste by the side of a busy road in Yosemite. Overflowing toilets in the Grand Canyon. The Rocky Mountains inaccessible because of unplowed roads.

And in all these places, ordinary people stepping in to try to save some of America's most revered landmarks from being overrun.