Doctor Kleinhouse was an archaeologist. He was somewhat familiar with Dr. Daniel Jackson's work. In 1997, he lead an expedition to a Mayan pyramid in Mexico, which revealed a Sarcophagus that had been left there centuries ago. He was subsequently killed by Hathor when she emerged from the sarcophagus and he told her that he knew nothing about the Goa'uld. (SG1: "Hathor")