Lake Clark National Park and Preserve is often noted for its rough untamed terrain. From its snow topped volcanoes, Illiamna and Redoubt, to mountain glaciers, it is an area of constant movement and change. The land serves as a living and breathing geology lesson, harboring evidence of land movement caused by earthquakes, glacier movement, and volcanic activity. Backpacking, fishing, and rafting are Lake Clark's most popular recreational offerings. There are no trails through the steep and rugged terrain, and weather can be unpredictable at all times of the year. Inexperienced travelers are encouraged to arrange travel plans with one of the many expert guides who are familiar with the Park. There is virtually no road access to Lake Clark National Park, but local air taxi companies provide access via small aircraft in under two hours, as does the Kenai Municipal Airport .