The Stone Forest was formed by karst two million to thirty mullion years ago. The Forest was contains peaks, pillars, stalagmites, depressions, underground rivers, and caves. The fantastic stone pinnacles rising abruptly from the ground resemble a huge, dense forest. Many of the stone pinnacles are associated with legends. In the Lesser Stone Forest. There is one pinnacle that resembles a slim and beautiful girl. Seen in silhouette with another stone formation, the girl appears to be carrying a basket on her back. This is the famous Ashma, heroine of an epic poem popular among the Sani people. According to the legend, Ashma, a Sani girl, refusing to be married to the landlord Rebubala, fought against the landlord and his men with her true love Ahei. They finally ran away from the landlord and came to the Stone Forest. But ganging up with the stone demon, Rebubala summoned up a flood and drowned Ashma, who then turned into the stone peak.

The origin of the Stone Forest is also the subject of an old legend. Long, long ago, in an attempt to flood the farmland of Lunan, the evil monster Asabe used his magic whip to drive a group of stone pinnacles to a place where they would obstruct the current of the Nanpan River. A hero of the Sani people, on hearing the news, rushed to the spot and fought the monster. Asabe was finally defeated and had to flee, leaving behind him the pinnacles that still bore the scars of his whip. These became the Stone Forest.

Moreover, the colorful ethnic cultures and folkways in the Stone Forest and the ravishing legends of " Ashima ", the " Torchlight Festival " of the Sani people on June 24 each year, and the warm and zestful Yi nationality dance " Axi Dance Under Moonlight " increase your enthusiasm in knowing more about the area.