Federal lands, and interests therein formerly within the boundary of the Snoqualmie National Forest and the Gifford Pinchot National Forest, which are included within the boundary of the Mount Rainier National Park pursuant to this Act are, subject to valid existing rights, hereby transferred to the administrative jurisdiction of the Secretary of the Interior for administration as part of the Park, and shall be subject to all the laws and regulations of the Park.

The Secretary of the Interior is authorized to accept either concurrent or exclusive jurisdiction over lands and waters included within Mount Rainier National Park by this Act. The Secretary shall notify in writing the Governor of the State of Washington of the acceptance of any such jurisdiction ceded to the United States by the State. The existing exclusive Federal jurisdiction, where it exists in the Park, shall remain in effect until such time as the Secretary and the Governor shall agree upon the terms and conditions of concurrent legislative jurisdiction for said Park pursuant to section 251l of this title.

The Secretary of the Interior is authorized to acquire from willing sellers by donation, purchase with donated or appropriated funds, exchange, bequest, or otherwise all non-Federal lands, waters, and interests therein included within the boundary of the Mount Rainier National Park pursuant to this Act.

Federal lands, and interests therein formerly within the boundary of the Mount Rainier National Park, which are excluded therefrom and are included within the boundaries of the Snoqualmie National Forest pursuant to this Act are, subject to valid existing rights, hereby transferred to the administrative jurisdiction of the Secretary of Agriculture for administration as part of the Forest, and shall be subject to all the laws and regulations applicable to the National Forest System.

For the purposes of sections 100506(c) and 200306 of title 54, the boundaries of the Snoqualmie National Forest and the Gifford Pinchot National Forest, as modified pursuant to this Act, shall be treated as if they were the boundaries of those national forests on January 1, 1965.

Effective upon acceptance thereof by the State of Washington, the jurisdiction which the United States acquired over those lands excluded from the boundaries of the Mount Rainier National Park by this Act is hereby retroceded to the State.