Award-winning app company Just Ahead released a new audio guide to Colorado’s Rocky Mountain National Park.

The GPS-guided app provides a narrated guide to the park as you drive, along with turn-by-turn directions. It includes all of the park’s major paved routes and east and west approaches. Just Ahead’s app can sense when you start driving, and the narration and directions launch automatically. After download from the Apple App Store or Google Play, this app requires no Internet connection or mobile-phone signal.

The app is narrated by Mel White, respected author of National Geographic’s Complete National Parks of the United States. White weaves descriptions and stories of the park’s highlights, like Bear Lake, Wild Basin, the Continental Divide, the Kawaneechee Valley and Trail Ridge Road, the highest continuously paved road in the United States. He talks about the various ecosystems drivers pass as well as trailheads for some of the greatest mountain hikes in the nation: hikes to the Twin Sisters Peaks, the great hikes that emanate from Bear Lake and the trail to Chasm Lake at the base of the sheer north face of Longs Peak, the park’s highest mountain at 14,259 feet.

Just Ahead also has guides to Yosemite, Grand Canyon, Joshua Tree, Death Valley, Sequoia & Kings Canyon, Zion & Cedar Breaks, Bryce Canyon, Capitol Reef, Canyonlands & Arches, Yellowstone and Grand Teton national parks.