As the team, Dr Ryland and his crew advanced into the caverns, the sonic mapper does its work. A few minutes, and it's produced a crude map of the rather extensive cave system you're in.
Nick notices that the tunnels seems to be natural, but reinforced with simple architectural techniques. Nothing beyond that of the Greeks of the period, though.
After a few minutes, the group arrives in a large cave, with several other exits leading off into the dark. The cave is dominated by a large statue of the Greek God Apollo in the center of the room, with an inscription in Greek under it.
There are two skeletons in this room, of a similar age of the ones at the entrance. These ones are wearing civilian clothing, however, and appear to have been brutally torn apart.
"Hmm, it says: If you be of the Society of Pythia, then walk free. If not, then turn back, or face your doom," Dr Ryland translated. "Warnings like this are more or less standard for temples and tombs like this."