'It's a free-for-all': shutdown brings turmoil to beloved US national parks

Human feces, overflowing garbage and damaging behavior reported as staff hampered over busy holiday period

Human feces, overflowing garbage, illegal off-roading, fights over camping spots and other damaging behavior in fragile areas are beginning to overwhelm some of the American west's most popular national parks, as a partial government shutdown left the areas open to visitors but with few staff on duty.