Kentucky park expands: 551 acres added, land-purchase budget finally adjusted for inflation

What it does

This bill expands Mammoth Cave National Park in Kentucky by authorizing the Secretary of the Interior to acquire approximately 551 acres of adjacent land for park inclusion. It also adjusts the inflation-indexed land acquisition cap from a fixed $350,000 to an amount that rises with the Consumer Price Index, allowing the park to keep pace with rising land costs.

Why we flagged it

The bill's operative mechanism is straightforward: it expands a national park's boundary and updates a decades-old acquisition budget cap to reflect inflation. Both are routine park-management functions with no hidden provisions or narrow beneficiaries.

What the text implies

• Inflation indexing of the $350,000 cap may significantly increase annual acquisition authority — depending on cumulative CPI since 1942, the effective cap could reach $6–8 million or higher, substantially expanding the park's land-purchase capacity without requiring new appropriations.
• The 551-acre addition is depicted on a specific May 2025 map (135/177,967); the bill's authority to acquire is discretionary ('may acquire'), so actual land purchase depends on Interior Department budget and willingness, not automatic.

Section numbers refer to the bill text the analysis read — linked under Primary records below.

Who it affects

Citizens gain expanded access to a major public recreation and conservation resource, and the inflation adjustment ensures the park can continue acquiring adjacent land at market rates rather than being frozen at 1942 dollars. No restrictions on citizen rights or protections are imposed.

Named in the bill

Mammoth Cave National Park, Secretary of the Interior, Department of Interior, Bureau of Labor Statistics, Department of Labor, Edmonson County, Kentucky, Barren County, Kentucky

Where it stands

• May 8, 2025 — Introduced · Congress.gov: “Introduced in Senate”
• May 8, 2025 — Referred to Senate Committee on Energy and Natural Resources · Congress.gov: “Read twice and referred to the Committee on Energy and Natural Resources”
• Jul 21, 2026 — Hearing held · Congress.gov: “Committee on Energy and Natural Resources Subcommittee on National Parks. Hearings held”

Dates and quoted wording are Congress.gov's action record; the timeline shows status changes, not every procedural step.