The Steppe Geoglyphs of Kazakhstan

In 2007, an economist and amateur archaeologist named Dmitriy Dey, scanning satellite imagery of northern Kazakhstan's Turgai region for personal interest, identified dozens of enormous geometric earthworks — squares, crosses, rings, and ancient solar-symbol shapes, some measuring up to 400 metres across — invisible at ground level but unmistakable from above. Subsequent surveys have catalogued more than 260 such "Steppe Geoglyphs" across the region, formed not by carving or painting but by mounding earth and stones into raised shapes, in some cases up to several metres high.

Excavations led by archaeologists from Kazakhstan's Kostanay University, beginning in the early 2010s, recovered animal bones and charcoal from within several of the earthworks, with radiocarbon dating placing construction at around 8,000 years ago — making them potentially older than the pyramids of Egypt and far older than Peru's Nazca Lines, to which they are frequently compared in media coverage. Researchers attribute the geoglyphs to the Mahandzhar culture, a Neolithic society of hunter-gatherers previously thought incapable of large-scale coordinated construction; the purpose of the shapes — proposed explanations include solar or astronomical markers, ritual gathering sites, and territorial or clan symbols — remains unresolved, and the sheer logistical effort required to build and maintain monuments legible only from a vantage point unavailable to their builders continues to puzzle archaeologists.