NORTH AMERICA
6,000 Ancient Mines Around Lake Superior
How did a prehistoric society extract massive amounts of copper using only stone and fire? A forensic look at the Lake Superior anomaly.
Arc
North America
Plains sites, river valleys, mounds, caches, and contact-era puzzles.
Latest Case Files
Recent write-ups in this arc.
NORTH AMERICA
Stone Walls at 12,000 Feet
High in the Colorado Rockies, thousands of prehistoric stone walls form complex hunting systems. A forensic look at the engineering of Rollins Pass.
NORTH AMERICA
The Rimrock Draw Anomaly: Evidence Beneath 15,000-Year-Old Ash
An investigation into Rimrock Draw Rockshelter in Oregon, where an orange agate scraper and extinct camel remains were recovered beneath a volcanic ash layer dated to about 13,000 BC. Associated evidence places human activity at roughly 16,300 BC, raising new questions about early migration into North America.
NORTH AMERICA
Mapped in the 1800s — Still Ignored
An investigation into the Newark Earthworks in Ohio, a four-square-mile geometric complex documented by 19th-century surveys but later obscured by modern development and misidentified as natural terrain.
NORTH AMERICA
These Ancient Sites Aren't Empty — They Were Erased
Archaeological sites across North America often appear empty, with no visible ruins. The explanation lies in ghost features, plow zone destruction, and the preservation bias of organic architecture.
NORTH AMERICA
The 855-Foot Stone Wall in Georgia That Protects Nothing
On a mountain ridge in northern Georgia stands an 855-foot stone wall that zigzags across the summit, encloses nothing, and left no artifacts behind. Archaeologists remain uncertain about its purpose.
Arc Intelligence: The Eastern Woodlands
Key definitions and context for North American anomalies.
Dry Masonry
A construction technique using stones stacked without mortar. Common in Middle Woodland structures like Fort Mountain.
Hopewellian Sphere
A prehistoric exchange network (c. 200 BC – AD 500) connecting the Great Lakes to the Gulf Coast, characterized by monumental earthworks and exotic trade goods.
Sterile Site
An archaeological site yielding no artifacts (pottery, lithics) despite structural evidence. Often implies a Temenos (sacred ceremonial separation).