; and (2) shall be managed in accordance with land management plans adopted under section 202 of the Federal Land Policy and Management Act of 1976 ( 43 U.S.C. 1712 ). (c) Description of areas The areas referred to in subsections (a) and (b) are the following: (1) The approximately 646 acres of the Yolla Bolly Wilderness Study Area designated as Non-suitable on the map titled Yolla Bolly Contiguous Wilderness Study Area – 1991 Suitability Recommendation and dated April 5, 2018. (2) The approximately 17,896 acres of the Timbered Crater Wilderness Study Area designated as Non-suitable on the map titled Timbered Crater Wilderness Study Area – 1991 Suitability Recommendation and dated April 4, 2018. (3) The approximately 10,770 acres of the Lava Wilderness Study Area designated as Non-suitable on the map titled Lava Wilderness Study Area – 1991 Suitability Recommendation and dated April 4, 2018. (4) The approximately 4,281 acres of the Pit River Canyon Wilderness Study Area designated as Non-suitable on the map titled Pit River Canyon Wilderness Study Area – 1991 Suitability Recommendation and dated April 4, 2018. (5) The approximately 16,998 acres of the Tule Mountain Wilderness Study Area designated as Non-suitable on the map titled Tule Mountain Wilderness Study Area – 1991 Suitability Recommendation and dated April 4, 2018. (6) The approximately 3,169 acres of the South Warner Contiguous Wilderness Study Area designated as Non-suitable on the map titled South Warner Contiguous Wilderness Study Area – 1991 Suitability Recommendation and dated April 5, 2018. (7) The approximately 640 acres of the Bitterbrush Wilderness Study Area designated as Non-suitable on the map titled Bitterbrush Wilderness Study Area – 1991 Suitability Recommendation and dated April 4, 2018. (8) The approximately 856 acres of the Buffalo Hills Wilderness Study Area designated as Non-suitable on the map titled Buffalo Hills Wilderness Study Area – 1991 Suitability Recommendation and dated April 5, 2018. (9) The approximately 18,598 acres of