As with other national parks, Zion National Park is filled with ... avoid hiking during thunderstorms, especially on trails such as the Narrows, which are predisposed to flash floods.

Even better is that most of the hikes require you to take a park-operated bus along the Zion Canyon Scenic Drive. I can't think of a better way to spend a day outdoors than going out and exploring ...

U.S. News Insider Tip: Shuttle passengers should pack a bag for the day in Zion Canyon with high-energy ... water flow rate (this can close the Narrows trail) and the possibility of storms are ...