grand canyon glass walkway

Photo: Grand Canyon's Glass Walkway to Open Next MarchGrand Canyon Skywalk Glass BridgeProposed glass walkway over the Grand CanyonThe horseshoe-shaped glass walkway is suspended 1 200 meters above the Picture of Grand Canyon glass bridge (Skywalk)Update: Here is another image of the Grand Canyon walkway, apparently from glass-bottomed bridge which sits 4 000 feet above the Colorado River.The