monastery of saint varlaam in meteora, greece

fortification architecture agriculture monasteries monasticism prehistoric consisting hermitages peripheral pilgrimage throughout wilderness according askitaria formation kalambaka landscape meteorite monastery mountains periphery preserved reservoir sandstone scattered sculpture undefined badlands building formerly heritage hovering included kastraki landmark monolith monument mountain nicholas northern orthodox reaching thessaly vineyard vacation centers century chapels clastic details geology highway history located meteora million mixture pillars plateau sources terrain tourism trikala various village bottom canyon formed greece height castle temple ruins cliff tower coast rock wall town