Mount Rushmore climbers to monitor and seal cracks annually. Due to budget constraints, the memorial is not regularly cleaned to remove lichens. However, on July 8, 2005, Alfred Kärcher GmbH, a German manufacturer of pressure washing and steam cleaning machines, conducted a free cleanup operation which lasted several weeks, using pressurized water at over . The flora and fauna of Mount Rushmore are similar to those of the rest of the Black Hills region of South Dakota. Birds including the turkey vulture, bald eagle, hawk, and meadowlark fly around Mount Rushmore, occasionally making nesting spots in the ledges of the mountain. Smaller
Mount Spokane State Park Mount Spokane State Park Mount Spokane State Park is a public recreation area located in the Selkirk Mountains, northeast of the city of Spokane, Washington. The state park surrounds Mount Spokane and other peaks including Mount Kit Carson, Beauty Mountain, and Quartz Mountain. The park receives of snow annually and is home to Mount Spokane Ski and Snowboard Park as well as an extensive system of trails for hiking, biking, and horseback riding. As of 2018, Washington State Parks reported its acreage as , making it Washington's largest state park, slightly ahead of Riverside State Park () which lies 23