Do you have a stomach of steel ? Do you dare to see through the glass floor which is above 3 miles from ground. Do you... ? At least i can't do this, but now its possible, you can walk above 3 miles from ground and can see through it .The grand Canyon walkway in USA give you this oppurtunity which is a master piece of modern engineering. It is above 4,000ft (1,220m) from the canyon's floor and 70ft (20m) beyond its rim.
At one time 120 people are allowed to walk on it.
If you fancy to walk on cloud, than go over there and have fun.
