U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 81Subpart D - Subpart D—Identification of Mandatory Class I Federal Areas Where Visibility Is an Important Value
View all text of Subpart D [§ 81.400 - § 81.437]
§ 81.411 - Kentucky.
Area name Acreage Public Law establishing Federal land manager
Mammoth Cave NP51,30369-283USDI-NPS
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