Located in Guizi Mountain in Nanjing City, east China's Jiangsu Province, is a special stone pillar forest.

It is estimated that there are 50,000 stone pillars in the "forest".

The densely- and orderly-clustered pillars have a diameter of about 50 centimeters, with a hexagon- or pentagon-shaped cross section.

First found in the 1980s, the landform was formed about 10 million years ago when the basalt magma cooled down after the volcano eruption.

(Cover photo via VCG.)

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