DENALI NATIONAL PARK & PRESERVE, ALASKA - See how tiny that huge tour bus on the road near the curve in the center of the picture looks? That gives you an idea of how massive the mountains of the Alaska Range in Denali National Park are. Formed over 100 million years ago, these many-colored rocks are hardened lava that may still be rising due to the area's continued seismic activity. Even though over 600,000 travelers visit the park each year seeking North America’s tallest peak – the 20,310' tall-Mount Denali, incredible scenery and wildlife, they won't see it all. The park has only one entrance on the eastern side of the park and only one road goes in and out. The park road extends only 92 miles west into this 6-million acre park. From late May thru early September, privately-owned vehicles may drive the first 15 miles of the park road. Beyond that, narrated or non-narrated buses travel across the winding, dirt and gravel roads, stopping at the Visitor Center and lookout points along the way.