A variety of ant nests
Ants make a nest in the soil or inside a dacayed tree.
In cold places, such as Hokkaido, only those ants that can make a nest in the soil, in a stump or beneath the bark of a fallen tree can survive. In warm districts southwest of the Kanto District, ant species that make a nest beneath the bark of a living three or inside a decayed branch can also be seen.
When click somewhere in the figure below, you will find ants living there.