Utah’s colourful canyons draw hikers, but flash flooding proves deadly for six people in national park
![Utah’s colourful canyons draw hikers, but flash flooding proves deadly for six people in national park](http://www.vancouversun.com/cms/binary/11371026.jpg)
Zion National Park rangers regularly warn hikers that a trickle of rain can quickly turn into a wall of water during monsoon season. But dozens go anyway