; and (2) to assist in fulfilling the purposes of the Whiskeytown-Shasta-Trinity National Recreation Area. (b) Requirements The Secretary shall ensure that the visitor center authorized under subsection (a) is designed to interpret the scenic, biological, natural, historical, scientific, paleontological, recreational, ecological, wilderness, and cultural resources of the Whiskeytown-Shasta-Trinity National Recreation Area and other nearby Federal lands. (c) Cooperative agreements The Secretary of Agriculture may, in a manner consistent with this Act, enter into cooperative agreements with the State and any other appropriate institutions and organizations to carry out the purposes of this section. 105. Del Norte County visitor center (a) In general The Secretary of Agriculture and Secretary of the Interior, acting jointly or separately, may establish, in cooperation with any other public or private entities that the Secretaries determine to be appropriate, a visitor center in Del Norte County, California— (1) to serve visitors