Ancient archaeological sites such as Stonehenge which have large upright stones arranged in a deliberate pattern or circle.
Megalithic stones that are part of ancient structures (such as Stonehenge)
Either alone, in an avenue or stone circle, they comprise of a large stone deliberately erected in an upright position.
Artifact of the Prometheans. The stones teach how to read and manipulate spirit, as well as give the pattern for society.
These are tall stones set upright in the earth by human activity. It is not completely understood why this was done, but the stones are definitely here and are occasionally to encountered in the woods.