If you're interested in volcanoes, you need not go further than our national parks to get your fill. Eighty-four units of the National Park System have volcanic resources. These parks run the gamut of having very active volcanic features to those where volcanoes formed the landscape and contribute to the geodiversity of the park.

The most active volcano in our park system is Kīlauea in Hawai'i Volcanoes National Park on the Big Island of Hawaii. It's also one of the most monitored and researched volcanoes anywhere. This week the Traveler's Lynn Riddick talks to Professor Leif Karlstrom, whose recent research of Kilauea might be music to your ears.