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
Washington State Route 206 Washington State Route 206 State Route 206 (SR 206, named the Mount Spokane Park Drive) is a state highway serving Mount Spokane State Park in the U.S. state of Washington. Beginning at U.S. Route 2 (US 2) north of Mead, the highway travels east through unincorporated Spokane County and northeast into the Selkirk Mountains, ending at the entrance to Mount Spokane State Park. The roadway, first constructed in the 1890s and reconstructed several times, was designated as SR 206 during the 1964 highway renumbering. SR 206 begins as Mount Spokane Park Drive at an intersection with US 2 north of