Lassen Volcanic National Park is a popular destination for hiking ... Death Valley is in the middle of the desert and is home ...

Four types of volcanoes—shield, composite, cinder cone, and plug dome—can be found in Lassen Volcanic National Park, where they literally bubble and steam.

National parks offer free admission Saturday for the start of National Park Week. Here's where to go near Reno, Las Vegas and other parts of Nevada.