The Secretary may evaluate lands adjoining the recreation area for possible inclusion in the recreation area and make recommendations to Congress, including (but not limited to) that area authorized for study by section 5 of Public Law 101-556 (104 Stat. 2764), known as the Baca Location Number 1. The Secretary, in consultation with local tribal leaders and the National Park Service, shall, no later than 2 years after October 12, 1993, submit recommendations with respect to future boundaries for the recreation area.