The Metéora literally "middle of the sky", "suspended in the air" or "in the heavens above" — etymologically related to meteorology) - is a formation of immense monolithic pillars and hills like huge rounded boulders.
It is also associated with one of the largest and most precipitously built complexes of Eastern Orthodox monasteries in Greece, second in importance only to Mount Athos. The six monasteries are built on natural sandstone rock pillars, at the northwestern edge of the Plain of Thessaly near the Pineios river and Pindus Mountains, in central Greece.
Metéora is included on the UNESCO World Heritage List under criteria I, II, IV, V and VII.
The above was taken from Wikipedia.
The photos that follow were taken with the D810 + 2/28 AI. As you see there were heavy clouds.
The last picture taken with D500 + 300mm PF.