Excavations at Black Rock Cave, on the northern end of the Oquirrh Mountains eastern Tooele County, Utah, were undertaken in the fall of 1982 as a result of a change from federal to private land ownership. The cave was first excavated in 1931 by Julian Steward. Data retrieved from the two excavations are comparable and can be interpreted with the aid of techniques like C and pollen analysis, developed in the 50 year interval between the two excavations. Results suggest the cave was first briefly occupied about 7-6000 years ago. Limited or no occupation occurred during a subsequent 3000 year period. From about 3200 B.P. until after about 1000 B.P. the cave was occupied by late Archaic and Fremont groups. There is limited evidence of protohistoric Numic-speaking groups. Throughout the occupation span, subsistence seems to have been rather broadly based in terms of both flora and fauna and was focused on items immediately available in the vicinity of the cave. Black Rock Cave was apparently part of a "set" of sites occupied briefly but simultaneously. Environmental conditions seem to have remained relatively stable throughout most of the occupational period.