Matano Lake is surrounded by ring of small mountain rock.

Almost every year in December - January, a strange phenomenon occurs in the center of Matano Lake.

A large tornado appears to stand still in the middle of the lake and remains there for a short time.

Most of Soroako's residents work as employees for the mining company PT.

Near the entrance is a chamber full of hundreds of skeletons that some say are the remains of a rebel force (PKI) from the 1950s and others claim is actually a native cemetery (similar to the cemetery caves of Tanah Toraja).