This report summarizes the results of excavations conducted within Op. 33 which includes a group of structures located on the west side of La Sierra's monumental site core. Most of the materials recovered here date to the Late (AD 600-800) and Terminal Classic (AD 800-1000).
Schortman, Edward, "PVN OP 033 Excavation Report" (1990). Four Valleys Archive. Paper 17694.