Old plan of the Serpent Mound
The Serpent Mound
Old plan of another serpent mound
Again in the USA, in the Mississipian world, the biggest representation of an almost universal icon: the serpent.
Note that the Serpent Mound describes a hemicycle, open to a small river.
In the same general area we can find other earthworks displaying animals.
Some related links: [link]