This Master Development Plan (MDP) amends and updates the existing 2018 Vail Resort Master Development Plan Update. It has been prepared to fulfill requirements of Vail Mountain Resort’s Special Use Permit (SUP) administered by the White River National Forest (WRNF). Originally issued in 1962 and renewed in 1993, this SUP represents a partnership between WRNF and Vail Resort spanning over six decades. Through this partnership, Vail Mountain Resort has facilitated public recreation opportunities within Forest Service lands.