Clay masks, dating to the VII-VI century B.C., from the sanctuary of
Artemis Orthia, now in the Archaeological Museum of Sparta, Greece.
The temple of Artemis Orthia, near the city of Sparta, was located at
the margins of the settlement, in a swampy area, as it was usual for
the temple sites dedicated to Artemis, a goddess associated with the
woodlands and the wild beasts. This cult site existed since the Geometric
period (X-IX century B.C.). Here were performed ceremonies called Gymnopaidiai,
initiatory rituals during which groups of youth entered in competition
through choir contests, which were regarded both as an agon and as a
test of endurance. The feast took place during the first month of the
year, which for many Greek cities coincided with the period immediately
following the harvest (Brelich, 1969). It can be hypothesized that these
masks, or wooden copies of them, which represents partly-animal faces
and could remind of images of the dead with their wrinkled skin, were
employed during these ceremonies by the youths undertaking the initiation
process.
[Source: http://www.theatrum.de/243.html]