Are you brave?
The steel-and-glass Skywalk, seen in this artist’s conception, will jut 70 feet (21 meters) from the canyon wall and sit 4,000 feet (1,220 meters) above the Colorado River.
The Native American tribe building the walkway hopes to bring in valuable tourist dollars that will bolster the local economy. But some members and residents worry that the structure will be doomed by its support system—steel poles drilled 40 feet (12 meters) into the porous canyon wall.
I’m not too sure? Are you brave enough? 
tip: National Geographic
Tags: architecture, national-geographic, news