If you've stood before Old Faithful as it erupts against a golden sunset, or perhaps a frosty sunrise, you're likely going to carry that image with you for the rest of your life. Or maybe the profile of Half Dome, as seen from Glacier Point in Yosemite National Park, leaps first to mind when you think of national parks.
Those are two bold, hard-to-forget images. But perhaps there's another setting in the National Park System that you hold most dear. It could be the sunset that softly backlights the sea stacks at Rialto Beach in Olympic National Park, the first rays of sunrise as spied from atop Cadillac Mountain in Acadia National Park, or the waving sawgrass that sweeps to the horizon at Everglades National Park.
There are other images cast by the national parks -- the Gettysburg battlefield at dusk, the silent cliff dwellings at Mesa Verde, the rippling waters of Voyageurs. Tell us what setting in the parks is burned forever into your memory.