 view gallery |   Longhorn Cavern National Natural Landmark - Burnet, Texas
in U.S. National Natural Landmarks Longhorn Cavern State Park, 11 miles southwest of Burnet in Burnet County. posted by:  txoilgas location: Texas date approved: 3/9/2009 last visited: 8/5/2012 |
 view gallery | Pine Creek Gorge - Wellsboro, PA in U.S. National Natural Landmarks Also known as The Pennsylvania Grand Canyon. posted by: fossilgirlerin location: Pennsylvania date approved: 3/7/2009 last visited: 7/31/2010 |
 view gallery | Mount Jefferson State Natural Area, Jefferson, North Carolina in U.S. National Natural Landmarks This natural area is located on Mount Jefferson in this small mountain town. posted by: macleod1 location: North Carolina date approved: 3/5/2009 last visited: 3/5/2009 |
 view gallery | The Glacial Grooves - Kelleys Island - Lake Erie,Ohio - USA in U.S. National Natural Landmarks The Glacial Grooves on the north side of Kelleys Island are the largest easily accessible such grooves in the world. They were scoured into solid limestone bedrock about 18,000 years ago by the great ice sheet which covered part of North America. posted by: JIMBOBWE location: Ohio date approved: 1/15/2009 last visited: 8/7/2012 |
 view gallery | Florida Caverns Natural Area, Marianna, Florida in U.S. National Natural Landmarks There is a plaque to commemorate this rare natural feature: a cave that can be toured by the public. posted by: Queens Blessing location: Florida date approved: 1/11/2009 last visited: 9/15/2012 |
 view gallery | Trona Pinnacles in U.S. National Natural Landmarks Located about 7 miles south of State Highway 178 and about 20 miles east of Ridgecrest, California. posted by: lazyCachers location: California date approved: 1/2/2009 last visited: 1/16/2012 |
 view gallery | San Andreas Fault - Hollister, California in U.S. National Natural Landmarks San Andreas Fault passes directly through a historic winery posted by: hotshoe location: California date approved: 11/23/2008 last visited: never |
 view gallery | Mammoth Spring National Natural Landmark - Arkansas in U.S. National Natural Landmarks Mammoth Spring is Arkansas's largest spring and the second largest spring in the Ozark Mountains. posted by: Queens Blessing location: Arkansas date approved: 11/6/2008 last visited: 11/6/2008 |
 view gallery | Wissahickon Valley in U.S. National Natural Landmarks A large park on the Wissahickon river. posted by: ODragon location: Pennsylvania date approved: 10/14/2008 last visited: 10/13/2008 |
 view gallery | Pickle Springs Natural Area, Farmington, Missouri in U.S. National Natural Landmarks Pickle Springs Natural Area features many outstanding natural features. posted by: paulspaper location: Missouri date approved: 9/15/2008 last visited: 9/8/2009 |
 view gallery | Germany Valley Karst Area in U.S. National Natural Landmarks Germany Valley is a scenic upland valley high in the Allegheny Mountains of eastern West Virginia originally settled by German (including Pennsylvania Dutch) farmers in the mid-18th Century. posted by: MNSearchers location: West Virginia date approved: 9/1/2008 last visited: 6/3/2012 |
 view gallery | Amboy Crater in U.S. National Natural Landmarks A 6,000 year old extinct volcano in the Mojave Desert posted by: Bernd das Brot Team location: California date approved: 8/27/2008 last visited: 4/3/2013 |
 view gallery | Mount Diablo State Park - Contra Costa County, CA in U.S. National Natural Landmarks State Park centered around Mount Diablo. posted by: saopaulo1 location: California date approved: 8/26/2008 last visited: 11/22/2012 |
 view gallery | Oak Orchard Creek Marsh in U.S. National Natural Landmarks A large area of undisturbed wetlands in Western New York. posted by:  Andy Too location: New York date approved: 7/30/2008 last visited: never |
 view gallery | Bear Meadows Natural Area in U.S. National Natural Landmarks Bear Meadows Natural Area was designated as a National Natural Landmark in October of 1965, and is important for understanding the climatic history of the area. posted by: johmer79 location: Pennsylvania date approved: 7/21/2008 last visited: never |
 view gallery | Lake Willoughby Natural Area in U.S. National Natural Landmarks Glacial trough. posted by: Vermontish location: Vermont date approved: 6/30/2008 last visited: never |
 view gallery | Round Lake - Fayetteville, New York in U.S. National Natural Landmarks Round Lake is one of two lakes located in Green Lakes State Park. Both lakes are glacial lakes and are listed as Meromictic lakes. Round lake is listed as a National Natural Landmark. posted by: PTCRAZY location: New York date approved: 6/12/2008 last visited: 4/15/2012 |
 view gallery | Worthington Glacier, AK in U.S. National Natural Landmarks 30 miles east of Valdez along Richardson Highway (Alaska SR 4). posted by: Megadrile location: Alaska date approved: 6/7/2008 last visited: 8/7/2011 |
 view gallery | Mendon Ponds Park in U.S. National Natural Landmarks Mendon Ponds Park has a wide variety of glacially created landforms. posted by: MrsMcFly location: New York date approved: 6/5/2008 last visited: 3/3/2012 |
 view gallery | Fults Hill Prairie Nature Preserve - Fults, Illinois in U.S. National Natural Landmarks Unique hill prairie along the bluffs formed long ago by the Mississippi River. posted by: paulspaper location: Illinois date approved: 4/8/2008 last visited: never |
 view gallery | Natural Bridge Caverns, Natural Bridge Caverns, TX in U.S. National Natural Landmarks Discovered by four college students in 1960, Natural Bridge Caverns is the most extensive cavern within the San Antonio area and one of the largest caverns in Texas.
posted by: 94RedRover location: Texas date approved: 4/3/2008 last visited: 3/10/2011 |
 view gallery | Okefenokee Swamp in U.S. National Natural Landmarks The Okefenokee Swamp is located within the Okefenokee National Wildlife Refuge in Georgia. It's the largest and most primitive swamp in the country and contains a diversity of ecosystems. posted by: Marine Biologist location: Georgia date approved: 2/22/2008 last visited: 10/13/2008 |
 view gallery | Fall Brook Gorge in U.S. National Natural Landmarks Fall Brook Gorge posted by: Nature Noggins location: New York date approved: 2/19/2008 last visited: 11/20/2009 |
 view gallery | Tinkers Creek Gorge in U.S. National Natural Landmarks Tinkers Creek Gorge located in the Bedford Reservation of the Cleveland Metroparks in Walton Hills, Ohio posted by: Team RAGAR location: Ohio date approved: 2/5/2008 last visited: 2/20/2010 |
 view gallery | Chiwaukee Prairie - Kenosha County, WI in U.S. National Natural Landmarks Considered the best remaining wet prairie in Wisconsin. A remnant of once widespread vegetation along the southern shores of Lake Michigan, including several rare plant species. posted by: cldisme location: Wisconsin date approved: 11/28/2007 last visited: never |
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