Antelope Canyon, Page, Arizona

The two people in this last photo gives some perspective on the size of these slot canyons.  When it rains, the canyons are closed, for people have died as the water rushes through the canyons, filling them up with a raging river.  It doesn't even have to rain in the area, for water from thunder storms miles away comes crashing into these canyons unexpectedly.  For years, the local native culture would not allow their people to venture in these "sacred" cliffs, believing they were places spirits lived.  I think the truth of the matter is that these places were so dangerous due to flash floods that they had to find a way to keep people out or they would become "spirits" when the floods came.