Review these guidelines with students, staff, and chaperones before the field trip. Some of these guidelines are based off of Leave No Trace principles .To integrate it into classroom learning, students could create a poster to promote one of these guidelines to their peers. In about a half a mile, students can hike this easy, uphill walk through a narrow canyon to view the natural bridge. This bridge was formed by flood waters in the canyon. Walking a half a mile further will take students to a dry waterfall. Plan Ahead and Prepare.