A magic world is revealed when visiting the largest caves in Eastern America.
This ice cave in California has some interesting and strange ice formations.
One of the world's most active volcanoes, with a constant eruption since 1983.
The volcano that changed the history of the United States in just minutes, today a National Volcanic Monument.
The people of Hawaii consider this to be a sacred place and the home of the Goddess Pele.
It preserves the world's longest known cave system, with over 360 miles of caves.
More than 100 caves, 250 million years old.
