Excavation in 2007 revealed pottery fragments and signs of activity in the ash altar believed to have been used as early as 3000 BCE. Nearby Olympia (only 22 miles away) has a similar ash altar, and both settlements held ancient athletic games. The extremely early date of activity at Lykaion could suggest that these customs originated there. Stratigraphic analysis from the most recent excavations showed prehistoric human activity at the altar site, which seems to have been in continuous use from the Late Neolithic period through to the Hellenistic era. A number of drinking vessels and bones of sheep and goats from the Late Helladic period indicates that the altar was the site of Mycenean drinking and feasting rituals, probably in honor of Zeus. An especially interesting discovery was a seal ring from the Late Minoan period (1500–1400 BCE), which could indicate some interaction between Mt. Lykaion and Crete, both of which are given as the birthplace of Zeus by ancient sources.