Katmai National Park and Preserve harbors a rich geological background. In June of 1912 Katmai's Novarupta Volcano erupted with a force that had only been matched by one other volcanic eruption in recorded history, the eruption of Greece's Santorini Volcano in 1500 B.C. In the aftermath of the eruption innumerable holes and cracks developed in the volcanic ash deposits covering the valleys surrounding Novarupta. The gas and steam escaping from heated underground water inspired Robert Griggs of the National geographic Society to name the active landscape the Valley of Ten Thousand Smokes. In addition to being one of the world's most active volcanic centers, with 15 active volcanoes, Katmai holds valuable answers to questions about prehistoric life. The Brooks River National Historic Landmark contains about 900 prehistoric human dwellings, the highest concentration in North America.

Summer visitors to the park will also find the Brooks River area to be an ideal brown bear viewing location. The parks other recreational offerings include hiking, camping, canoeing, and fishing. Access to Katmai National Park and Preserve is available via small aircraft. Contact local air taxi companies or the Kenai Municipal Airport for flight information.