Natural feature

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Agassiz Bedrock Outcrop (Hancock County, Maine)
Alum Spring (Onslow County, North Carolina)
Ausable Chasm (Clinton County, New York)
Badlands National Park (Pennington County, South Dakota)
National Park
Badwater (Inyo County, California)
Lowest point in North America at 282 feet below sea level
Ball Mill Resurgence (Perry County, Missouri)
Battery Rock (Hardin County, Illinois)
Beacon Rock (Skamania County, Washington)
848 foot high basalt monolith
Beartown Rocks (Jefferson County, Pennsylvania)
Natural overlook in Clear Creek State Park
Beaverhead Rock-Lewis and Clark Expedition (Madison County, Montana)
Bell Smith Springs (Pope County, Illinois)
Amazing collection of rock formations, stone arches.
Bergen Swamp (Genesee County, New York)
2,000 acre swamp and nature preserve, a National Natural Landmark
Big Mine Run Geyser (Schuylkill County, Pennsylvania)
Man-made geyser for Centralia-area coal mine
Blue Pond (Bollinger County, Missouri)
Bluff Creek (Humboldt County, California)
Bradford House II (Jefferson County, Colorado)
Brasstown Bald (Towns County, Georgia)
Highest Point in Georgia
Burnett Springs (Logan County, Arkansas)
Burris House and Potawatomi Spring (Carroll County, Indiana)
Cape Mendocino (Humboldt County, California)
Westernmost point in the state of California
Clark's Lookout, August 13, 1805 (Beaverhead County, Montana)
Colossal Cavern Entrance (Edmonson County, Kentucky)
Currahee Mountain (Stephens County, Georgia)
Descanso Gardens (Los Angeles County, California)
Marker noting the location of a historic oak tree.
Drakesbad Guest Ranch (Plumas County, California)
Dundee Mountain (Fond du Lac County, Wisconsin)
The tallest kame in the Kettle Moraine State Forest
El Capitan (Mariposa County, California)
Display about the El Capitan rock formation.
Elephant Rocks State Park (Iron County, Missouri)
State park featuring pink granite rock formations
Ginkgo Petrified Forest (Kittitas County, Washington)
National Natural Landmark designated in 1965
Glaciers at the Gate (Mariposa County, California)
Display about the formation of Yosemite Valley.
Glassy Mountain (Pickens County, South Carolina)
Strking Mountain in Pickens County, SC
Goose Lake (Modoc County, California)
147 square mile alkaline lake
Grandad Bluff (La Crosse County, Wisconsin)
A 590 foot tall mesa overlooking the CIty of La Crosse and the Mississippi River Valley
Grande Ronde Goosenecks (Asotin County, Washington)
National Natural Landmark designated in 1980
Grandfather Mountain (Avery County, North Carolina)
Hanging Rock (Montgomery County, Pennsylvania)
Heron Pond (Johnson County, Illinois)
Hillside (Plymouth County, Massachusetts)
Hogback Mountain (Greenville County, South Carolina)
Predominant Mountain Feature in Greenville County, SC
Horicon Marsh (Fond du Lac County, Wisconsin)
31,653 acre marshland along the Rock River
Horicon Marsh (Dodge County, Wisconsin)
31,653 acre marshland along the Rock River
Immortal Tree (Humboldt County, California)
Coastal Redwood (Sequoia Sempervirens) 950 - 1000 year old
John Day Fossil Beds National Monument - Clarno Unit (Wheeler County, Oregon)
John Day Fossil Beds National Monument - Painted Hills Unit (Wheeler County, Oregon)
Jug Rock (Martin County, Indiana)
Natural Rock Formation
Lake Abert and Abert Rim (Lake County, Oregon)
Fault scarp 30 miles long and saline lake 57 sq. miles
Lake Henshaw (San Diego County, California)
Irrigation reservoir constructed in 1923
Little John Creek Reserve (Morris County, Kansas)
Look See Tree (Drew County, Arkansas)
Looking Glass Rock (Transylvania County, North Carolina)
Natural landmark - pluton monolith in the Appalachian Mountains of western North Carolina
Lost Hill (Scott County, Missouri)
Isolated hill and rock outcroppings along Route M west of Scott City
Lost River Cave and Valley (Warren County, Kentucky)
Ancient Cave Valley with bluehole river with various uses since prehistoric times.
Malheur Butte (Malheur County, Oregon)
Extinct volcanic plug 2,661 feet in elevation
Malheur National Wildlife Refuge (Harney County, Oregon)
National Wildlife Refuge created in 1908
Marengo Cave (Crawford County, Indiana)
The cave offers two walking tours, gemstone mining, a maze crawl, gift shop, walking trails and picnic grounds.
Mazon Creek Fossil Beds (Grundy County, Illinois)
McCartys Lava Flow (Cibola County, New Mexico)
Morro Rock (San Luis Obispo County, California)
581' tall volcanic plug located at the entrance to Morro Bay
Mount Diablo (Contra Costa County, California)
Initial Point for Northern California & Nevada Land Surveys
Mount Hood (Clackamas County, Oregon)
11,249' volcanic mountain peak, highest point in Oregon
Mount Mitchell (Yancey County, North Carolina)
Highest point in North Carolina and highest point in US east of the Mississippi River
Mount Pisgah (Haywood County, North Carolina)
Mount St.Helens (Skamania County, Washington)
8,363' high active volcano in the Cascade Range
Mushroom Rock State Park (McPherson County, Kansas)
Dakota sandstone concretions, some having mushroom shape.
National Bison Range (Lake County, Montana)
National Wildlife Refuge created in 1908
Natural Dam (Mariposa County, California)
Display about the formation of Mirror Lake
Nazi Spy Landing Site (Hancock County, Maine)
New Madrid Fault Line (New Madrid County, Missouri)
Ninepipe National Wildlife Refuge (Lake County, Montana)
National Wildlife Refuge created in 1921
Owl Rock (Cibola County, New Mexico)
Petrified Sea Gardens (Saratoga County, New York)
Pillars of Rome (Malheur County, Oregon)
Pilot Mountain (Surry County, North Carolina)
Mountain used by settlers for navigation.
Platte Mound (Lafayette County, Wisconsin)
Portuguese Bend (Los Angeles County, California)
Description of the unique geology of the area.
Quarries of the Hummelstown Brownstone Company (Dauphin County, Pennsylvania)
Rainbow Trout species identification site (Alameda County, California)
Raven Rock (Harnett County, North Carolina)
Rock formation on piedmont fall line of Cape Fear River
Reelfoot Lake (Lake County, Tennessee)
Formed after New Madrid Earthquake
Rich Bar (Plumas County, California)
San Leandro Oyster Beds (Alameda County, California)
Sand Prairie Conservation Area (Scott County, Missouri)
Remnant sand prairie preserved as a state conservation area
Sanilac Petroglyphs (Sanilac County, Michigan)
Santa Fe Trail--San Miguel County Trail Segments (San Miguel County, New Mexico)
Sassafras Mountain (Pickens County, South Carolina)
Highest Point in South Carolina
Savanna Portage (Aitkin County, Minnesota)
Schoonmaker Reef (Milwaukee County, Wisconsin)
Soldiers' Home Reef (Milwaukee County, Wisconsin)
State Quarry, Old (Johnson County, Iowa)
Steptoe and Kamiak Buttes (Whitman County, Washington)
National Natural Landmark designated in 1965
Sugar Loaf (Winona County, Minnesota)
Named for the shape that sugar was sold in back in the 19th Century
Sydney's Bluff (Cheatham County, Tennessee)
Table Rock (Pickens County, South Carolina)
Natural bald mountain in the Carolina foothills
The Gulf (Wayne County, Missouri)
Collapsed cave and underground lake southwest of Mill Spring
Timm's Hill (Price County, Wisconsin)
Highest natural point in Wisconsin
Tower Rock (Cascade County, Montana)
Tower Rock (Perry County, Missouri)
Town Doctors' House and Site (Suffolk County, New York)
Tree Rock (Albany County, Wyoming)
A small pine tree, growing out of a pre-Cambrian rock on Sherman Hill
Two Sisters Rock (Walla Walla County, Washington)
449' basalt formation resulting from the erosion by the Missoula floods circa 10,000 - 13000 BC
Umatilla National Wildlife Refuge (Morrow County, Oregon)
National Wildlife Refuge created in 1969
Van Hise Rock (Sauk County, Wisconsin)
A monolith of Baraboo Quartzite, a destination for geologists and students from around the world
Wallula Gap (Walla Walla County, Washington)
National Natural Landmark designated in 1980
Waterfalls of Yosemite (Mariposa County, California)
Display about the waterfalls in Yosemite.
York Iron Company Mine (York County, Pennsylvania)
Yosemite National Park (World Heritage Site) (Mariposa County, California)
Plaque noting Yosemite National Park as a World Heritage Site.
Yosemite Valley (Mariposa County, California)
California State Historical Landmark about Yosemite Valley