term Biological Corridors Map means the map entitled Biological Corridors and dated April 28, 2016. (2) Map 1 The term Map 1 means the map entitled Islands in the Sky Map 1 and dated April 28, 2016. (3) Map 2 The term Map 2 means the map entitled Islands in the Sky Map 2 and dated April 28, 2016. (4) Map 3 The term Map 3 means the map entitled Islands in the Sky Map 3 and dated April 28, 2016. (5) Map 4 The term Map 4 means the map entitled Islands in the Sky Map 4 and dated April 28, 2016. (b) Designations To protect the unique and increasingly isolated island mountain ranges in the Northern Rockies Bioregion, the following land is designated as wilderness: (1) Wenaha-tucannon wilderness additions The following land is incorporated in, and shall be administered as part of, the Wenaha-Tucannon Wilderness: (A) Upper tucannon addition Certain Federal land within the Umatilla National Forest comprising approximately 13,000 acres, identified as Upper Tucannon Addition on Map 1. (B) W- T addition Certain Federal land within the Umatilla National Forest comprising approximately 2,000 acres, identified as W-T Addition on Map 1. (C) Meadow Creek addition Certain Federal land within the Umatilla National Forest comprising approximately 2,000 acres, identified as Meadow Creek Addition on Map 1. (2) North fork john day wilderness additions The following land is incorporated in, and shall be administered as part of, the North Fork John Day Wilderness: (A) Greenhorn mountain addition Certain Federal land within the Malheur National Forest and the Wallowa-Whitman National Forest comprising approximately 24,000 acres, identified as Greenhorn Mountain Addition on Map 1. (B) Jumpoff joe additionto north fork john day wilderness Certain Federal land within the Malheur National Forest and the Umatilla National Forest comprising approximately 7,000 acres, identified as Jumpoff Joe Addition to North Fork John Day Wilderness on Map 1. (C) Twinmountainadditiontonorth fork john day wilderness Certain Federal land within the