Archaeology is a science dedicated to improving our understanding of our collective human past through study of physical remains left behind. Artifacts are perhaps the best known unit of study. These include all portable objects (from stone tools to forks) that have been made, modified or used by human beings. Features are objects, such as cooking hearths, rock walls, or storage pits, that cannot be removed without destroying their basic integrity. Clustered concentrations of artifacts and features on the landscape typically are defined as archaeological sites. The patterned configuration of sites with their associated features and artifacts provides a valuable archaeological record of long-term human use of a place –a record no less important at Mount Rainier than at parks, such as Mesa Verde in Colorado or Chaco Canyon in New Mexico, better known for their spectacular archaeological remains.