Fort Rock Cave

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

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

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

Crater Lake National Park is a United States National Park located in

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

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

The Greaser Petroglyph Site is located on land owned by the Bureau of

Itasca State Park is a state park in Minnesota, United States, and

Tumacácori National Historical Park is located in the upper Santa

Fort Kearny was a historic outpost of the United States Army founded

The Plains of Abraham (French: Plaines d'Abraham) is a historic area

Letchworth State Park is a New York state park located 35 miles