Cave Without a Name is a limestone solution cave in the Texas Hill Country that has operated as a show cave since 1939 and became a National Natural Landmark in 2009. Though open to nature for many thousands of years, human use is only documented from the early 20th century, with rediscovery in 1935 leading Jim Horn to develop it for visitors. Its famous name came from a 1940 contest entry saying it was too beautiful to have one. The cave includes six public chambers rich in formations, extends into a larger mapped system, shelters bats and the rare blind Kendall County salamander, and remains an active visitor destination.