Tourists walk on the glass-bottomed Skywalk that extends 70 feet over the edge of Grand Canyon West’s Eagle Point, Wednesday, March 28, 2007, in northwestern Arizona. The Grand Canyon Skywalk opened to the general public on the Hualapai Indian Reservation. (AP Photo/The Arizona Republic, Rob Schumacher) ** MARICOPA COUNTY OUT, MESA TRIBUNE OUT, MAGS OUT, NO SALES **