A complex of cultural materials which define a phase from 100 BC to 200 AD of Highland Mayan sites in the Late Pre-Classic period. It is the Late Formative period of the Valley of Guatemala. Characteristic artifacts include engraved soft stone and monochrome ceramic vessels, as well as 'mushroom stones' (hollow stones set in an annular base and capped with mushroom-shaped covers, which may have been used in rites with hallucinogenic mushrooms). A strong Izapan influence is evident. The huge Miraflores mounds located at Kaminaljuyú contained log tombs of incredible richness. In one, the deceased was accompanied by sacrificed followers or captives. As many as 340 objects were placed with him, including jade mosaic masks, jade ear spools and necklaces, bowls of chlorite schist, and pottery vessels of great beauty.