The Korykeion Andron is located approximately 15 km from Arachova and 9 km from Livadi, on the road to Parnassos Ski Resort. It is an impressive cave in Parnassos which, in ancient times, was the reference point to worship the God Pan and the Nymphs.
It is divided into two halls (the largest measures 90x60 meters and is very high) and here the oldest archaeological findings dating from the middle and the later neolithic period were discovered and are now on display at the Delphi museum. In the first hall, there are impressive stalactites and stalagmites and once in the second hall, the difference in light is immediately noticeable.
Because the Korykeion Andron is invisible and can not be seen directly with the naked eye, during the Greek Revolution it was used as a hideout by Odysseas Androutsos. This was not the only time it was used. It was also used as a shelter during the Persian Wars and under Turkish rule.
There are two versions concerning the origin of its name. One is due to the Korykeion Nymph, who was seduced by Apollo, and the second is that the stalactites above resembled shades (korykes).