Wisconsin effigy mound survey reveals minute-accurate ancient layout precision. Surveyed hundreds to thousands of effigy mounds across Wisconsin and surrounding states Found precision in mound layout to the nearest minute of arc Comparable accuracy to the pyramids of Egypt
New survey of Wisconsin effigy mounds used Lidar and GIS technology to analyze mound layouts, revealing geometric patterns across regional networks. Earlier surveys relied on basic mapping methods with limited precision. Researchers suggest the geometric relationships may hold cultural meaning, though interpretation remains ongoing.
Key Facts
- Surveyed hundreds to thousands of effigy mounds across Wisconsin and surrounding states
- Found precision in mound layout to the nearest minute of arc
- Comparable accuracy to the pyramids of Egypt
- Previous mounds had been surveyed with compass control accurate to only a couple degrees
- Discovered geometry patterns that can be read like a new book
Source: The Shaman and The Philosopher by Institute for Natural Philosophy