Today, I joined a busload of other Columbia librarians for a field trip to ReCAP, an offsite storage facility for books and resources shared by Columbia, the New York Public Library and Princeton. ReCAP stands for The Research Collections and Preservation Consortium.
ReCAP houses over 11 million total volumes in giant, massive airport-hangar looking rooms. (With room to grow into 30 million!) There is also a specially controlled, colder vault to preserve film.
I blogged about the tour in more detail on my personal blog. You can read the full entry, and see a slide show, there.