sentences:  Several members of this group have continued work at other related locations in the Northwest Peten, including the sites of Zapote Bobal and Pajaral, as part of the Proyecto Peten Noroccidente (PNO).La Joyanca was occupied for well over 1000 years.Dates from the site range from the Late Preclassic (200 BC) to the Terminal Classic/Postclassic (AD 1000).