Mammoth Cave National Park Boundary Adjustment Act of 2023

This bill allows the U.S. Department of the Interior to acquire approximately 980 acres of land in Edmonson and Barren Counties, Kentucky, for inclusion in Mammoth Cave National Park. The land, specifically depicted on a 2022 map titled "Mammoth Cave National Park Proposed Southern Boundary Expansion," would expand the park's boundaries. The Secretary of the Interior may purchase this land to add it to the park, replacing previous funding restrictions with a flexible "such sums as are necessary" approach. This directly affects landowners in the specified area and the park's physical boundaries.