Trek through towering redwoods on the James Irvine Trail, a 4.5-mile one-way hike nestled in Prairie Creek Redwoods State Park, California. Starting behind the Visitor Center, the trail offers 450 ...

The Department of the Interior is requiring the National Park Service to post signs nationwide by June 13 asking visitors for feedback on any information they feel misrepresents American history.

The National Park Service did not respond to CNN’s request for comment on its staffing levels. Meanwhile, visitors are arriving in droves.

Signs installed earlier in National Parks earlier in June asked for feedback on signs "that are negative about past or living Americans." Comments viewed by NPR didn't provide the requested feedback.