View of the interior of the “secret passage” that is just to the left (west) of the Kassotis Spring. It is not clear if this is associated with the spring or possibly with the Oracle of Delphi.
Note the hewn rock walls and ceiling. The walls do not seem to be plastered.
For a brief description of the Temple of Apollo Click Here.
For a brief description of Delphi, and a map, Click Here.