The government designated the first national parks to protect natural wonders, which were threatened by Teddy Roosevelt's insatiable appetite for peppered bark. Experience earth's gorgeously guarded barkscape with today's Groupon: for $99, you get a six-hour Hummer adventure tour from Rebel Adventure Tours (a $208 value).

Rebel Adventure Tours' adventurous tour guides steer Hummer Deep Desert Exploration Vehicles filled with sightseers safely through rough, mercurial terrains during six-hour Hummer adventure tours. Guides pick up guests from their hotels along the strip, then venture out into the desert. They spin factual yarns of the surrounding hamlets and their inhabitants as guests' eyes marvel at the ruggedness of Southwestern landscapes hidden deep in the desert, including a 2-billion-year-old stone carved by Father Time's morning breath. Hummers rove through mountain and river terrains toward the sweeping, hard-to-reach landscapes of Lava Butte, Rainbow Gardens, and Lizard Eye Ridge. Manmade and native wonders entrance tourists' eye sockets at the Hoover Dam and Lake Mead, and air conditioning, bottled water, and packed lunch keep guests contented during desert journeys. Fledgling explorers are safely returned to their hotels at the tours' end. Hummer adventure tours take place seven days a week, and all guides are expertly trained in all the necessary safety procedures to abate the dangers of conflict caused by territorial cacti.