causing flash flooding and hail the size of nickels in area slot canyons. "Words cannot describe the heartbreak of what has happened and the support from family, friends and those who just want to ...

All slot canyons in Arizona are carved out of Navajo sandstone that’s been eroded by flash flooding and wind erosion over millions of years. The result is canyon walls with smooth, undulating ...

So then a slot canyon is very narrow and very deep ... running through these canyons. As the flash flood goes through here, it digs down and sometimes it'll replace all the silica at the bottom.