Historical clue formulations

• Peak NW of Athens — 2018-08-19
• Greek peak, briefly — 2018-02-13
• Greek high spot — 2014-12-07
• Landmark also known as Kissavos — 2012-07-28
• Greek peak SE of Olympus — 2012-02-29
• Greek high spot — 2010-04-18
• It's S. of the Vale of Tempe — 2010-03-20
• Greek peak — 2007-12-06
• Peak in NE Greece — 2007-11-11
• Greek peak — 2007-09-23
• Peak in NE Greece — 2001-12-09
• Peak of NE Greece — 1997-06-01