Columnar basalt
Who, ya, that intention really carve stone carved into this form? Not the craftsmen who are too diligent, really, but nature itself. The unique shape of these basal stones occurs as a result of frozen and broken lava flows in the direction perpendicular to the origin of the stream.
This phenomenon can be found everywhere, from the United States, Ireland to India. In Indonesia, you can see the basal blocks scattered on Mount Padang, West Java.
