These well-preserved basalt columns are known as "Symphony of the Stones" and are located in the Garni Gorge, near Yerevan, capital city of Armenia. The columns are visible because they were carved out by the Goght River.

These well-preserved basalt columns are known as "Symphony of the Stones" and are located in the Garni Gorge, near Yerevan, capital city of Armenia. The columns are visible because they were carved out by the Goght River.
More info here:https://commons.wikimedia.org/wiki/File:Sinfon%C3%ADa_de_las_Piedras,_valle_de_Garni,_Armenia,_2016-10-02,_DD_33.jpg