HIKERS

Some park users

• Appalachian Trail enthusiasts

• Backpack toters

• Backpackers

• Foot travelers

• Many national-park visitors

• Nature-trail travelers

• Ones on trails, perhaps

• Parkgoers with backpacks

• Path finders

• Range rovers

• Some Yellowstone visitors

• Trail followers

• Trail travelers

• Trail trekkers

• Trail walkers