The underground caverns

A quick visit this past Friday to the ‘The Best from Pen and Press’ exhibit at the UMN Libraries and a tour of the underground storage caverns at Andersen Library (aka where the Archives and Special Collections live). The caverns (there are two) lie below a 30 foot layer of limestone plus an extra 30 feet of topsoil, clay, and gravel, are each two stories high, are the length of two football fields, are built into the cliffs overlooking the Mississippi River, and have a 62 degrees temperature. I last toured the caverns over 10 years ago and they are still a fun place to visit. Plus so many books!