On August 24, 1937, the Lewis and Clark Caverns National Monument was officially transferred to the State of Montana, becoming Lewis and Clark Caverns State Park. This significant event marked the establishment of Montana's first state park, preserving one of the largest and most decorated limestone caverns in the Northwest.

The caverns, originally discovered in 1892, were designated a national monument in 1908 by President Theodore Roosevelt, recognizing their unique geological formations and historical significance. The transfer to state control allowed for more localized management and development, making the caverns more accessible to the public for recreation and education.

Today, Lewis and Clark Caverns State Park offers guided tours through its intricate passages, showcasing stunning stalactites, stalagmites, and other speleothems. It stands as a testament to Montana's natural beauty and its commitment to preserving its geological wonders for future generations, attracting thousands of visitors annually.