Earthquakes tremors both mild and moderate are frequent occurrences in the park and preserve. The building of these massive mountains began out of flat lowland. The material that Earth's inner turmoil thrust up has subsequently been eroded, sculpted, and weighed down by huge masses of ice. Numerous glaciers still radiate from the high peaks of the Alaska Range, where the frigid temperatures prevent them from melting. Some of the glaciers are visible from the park roads.
Geologists say that Mount McKinley still rises today.
While McKinley is a great mountain, there are many other interesting mountain peaks to view in the park which include but are not limited to Foraker, Mather, Hunter and Cathedral Spires.