the slimmest section of Zion Canyon is known as The Narrows. It's one of the park's most popular hikes and starts tame with the one-mile Riverside Walk, a wheelchair-accessible hike. After that ...
Pets are not allowed on this trail. There are no set hours for the Riverside Walk (be mindful of last shuttle though) and access is included in the Zion park entrance fee. For more information ...
The Riverside Walk follows the North Fork of the Virgin ... 22-minute video that gives a nice overview of Zion National Park.