Designations of the 21st Century

• Nottingham Park Serpentine Barrens, Pennsylvania

• Ice Mountain, West Virginia

• Ashfall Fossil Beds, Nebraska

• Big Bone Lick, Kentucky

• Chazy Fossil Reef, New York & Vermont

• Albany Pine Bush, New York

Recently designated National Natural Landmarks include the following:

December 2023

• Glenwood Caverns and Iron Mountain Hot Springs, CO
• John Boyd Thacher State Park, NY

View the Press Release for these designations
Learn more in the article New Landmarks Reveal Stories Millions of Years in the Making, Below and Above Ground

January 2021

• Bear Rocks and Allegheny Front Preserve, WV
• Lanphere and Ma-le'l Dunes, CA
• Sulphur Cave and Spring, CO

View the Press Release for these designations
Learn more in the article High Plateaus, Smelly Caverns, and Coastal Dunes, Meet the Nation’s Newest Natural Landmarks

November 2016

• West Bijou Site, CO

June 2016

• Mount Howard-East Peak, OR

July 2014

• Albany Pine Bush, NY

April 2013

• Garden Park Fossil Area, CO (boundary expansion)
• Wade Tract Preserve, GA
• Zumwalt Prairie, OR

October 2012

• Big Spring Creek, CO

May 2012

• Ice Mountain, WV
• Lake Shasta Caverns, CA

June 2011

• Barfoot Park, AZ
• Hanging Lake, CO
• Kahlotus Ridgetop, WA
• Morrison-Golden Fossil Areas, CO (a boundary expansion of the original Morrison Fossil Area)
• Round Top Butte, OR
• The Island, OR

January 2009

• Big Bone Lick, KY
• Cave Without A Name, TX
• Chazy Fossil Reef, NY/VT
• Nottingham Park Serpentine Barrens, PA

October 2006

• Irvine Ranch, CA

May 2006

• Ashfall Fossil Beds, NE