On the mountain Kopaonik in Serbia there is a location called "Marco's Rocks". Those are huge rock blocks, some of them are larger then 10 meters.
Legend says that the Prince Marco, practiced with those rocks for his fight on Kosovo. He practiced so eagerly that at the end he was late for this fight.
Anyway, those formations are so interesting as you can see by youself.
Enjoy! For your best from my heart.
Pictures taken by me.
(Cannon EOS 2000D)