Crater Lake National Park

Crater Lake is a caldera lake located in the U.S. state of Oregon. It

Prospect State Scenic Viewpoint, is a state park in the U.S. state of

Hole-in-the-Ground is a large maar (explosion crater) in the Fort Rock

Fort Rock Cave is the site of the earliest evidence of human

The Lava River Cave near Bend, Oregon is part of the Newberry National

The High Desert Museum is located near Bend, Oregon, United States.

Lava Beds National Monument, located in Siskiyou and Modoc Counties,

Pluto's Cave is 50 square miles of partially collapsed lava tubes on

Parque Nacional Los Glaciares (Spanish: The Glaciers) is a national

Badlands National Park, in southwest South Dakota, United States

Banff National Park (pronounced ) is Canada's oldest national park,

The Hardangervidda is a mountain plateau ('vidda' in Norwegian) in the

Brazil's Chapada dos Veadeiros National Park is located in the Chapada