The first specimen of the endangered cactus species, Sandillón (Eriocyce aurata), propagated in a University of La Serena laboratory as part of LSST’s environmental mitigation program, has been relocated to the greenhouse on Cerro Pachón. The relocation is a significant milestone in LSST’s effort to mitigate the effects of site excavation on the endangered species of Chile (LSST E-News, October 2011 Volume 4 Number 3).