Columnar formations in basalts are known. These formations are also seen in sandstones but I consider them to be atypical. Few columnar structures of the hexagonal type are known in arensics and so far I have not received a convincing explanation for their origin. Is it chemical? What would be the reaction that led him to have that unique geometric shape. Is it physical? In this case, what mechanism or factors influenced it to have this peculiar shape.