The staff of Rocky Mountain National Park invite you to celebrate World Ranger Day as they recognize world conservation areas, and the professional staff – the rangers – that form the "Thin Green Line" around these most valuable resources. The free program will be held on Tuesday, July 31, from 7 p.m. to 8:30 p.m. at the Beaver Meadows Visitor Center auditorium.

While ground crews returned to the backcountry of Rocky Mountain National Park on Sunday to continue their search for a missing day hiker, "eyes in the sky" were lost as air support was diverted to battle wildfires elsewhere in Colorado.

Campfires, both those built with wood and charcoal briquettes, have been banned in Rocky Mountain National Park in Colorado due to the extreme fire danger and the ongoing dry weather.

Summer is here, it's time to head out to find your spot in the National Park System. But traffic can be a bear and leave you without a spot to park. Here's a look at 10 parks that experience some of the worst summer traffic in the system. And some solutions to consider.