Editing National Park Service (section)

===National Trails System===
The [[National Trails System]] is a joint mission of the NPS, the [[Bureau of Land Management]] and the [[United States Forest Service|US Forest Service]]. It was created in 1968 to establish a system of long-distance [[National Scenic Trail|National Scenic]] and [[National Historic Trail]]s, as well as to recognize existing trails in the states as [[National Recreation Trail]]s. Several additional trails have been established since 1968, and in 2009 Congress established the first [[Ice Age Floods National Geologic Trail|National Geologic Trail]].<ref>National Trails System Map and Guide; National Park Service (DOI); Bureau of Land Management (DOI); Forest Service (USDA): Government Printing Office, 1993</ref>