The city was built upon a complex of natural caves which were once used for the lagering of beer by early German immigrant brewers.
John Adam Lemp, coming to St. Louis from Germany in 1838, started a brewery using natural caves for refrigeration.
[2] An oral tradition in St. Louis links the cave system with the Underground Railroad.
According to this tradition a tunnel behind the house at 3314 Lemp Avenue was used as a secret entrance to the caves.
[4] In January 2019, the Missouri Speleological Survey printed the History of Lemp Brewery Caverns and Cherokee Cave.