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 Greylock State Reservation offers overnight accommodations and meals during non-winter months. The reservation's of trails for hiking, mountain biking, back-country skiing, snowshoeing and snowmobiling include an section of the Appalachian National Scenic Trail and the historic Thunderbolt Ski Trail. Primitive camping is available for backpackers at either the Mount Greylock Campground or remote trailside backpacker shelters, all of which are only accessible by foot. Hunting is permitted in season. Mount Greylock State Reservation Mount Greylock State Reservation is public recreation and nature preservation area on and around Mount Greylock, the highest point in the state of Massachusetts. The park covers some in the