Keyhole stone structures near Khaybar
Photo: NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. Story by Emily Cassidy., Public domain, via Wikimedia Commons
The Keyhole stone structures near Khaybar consist of 19 mysterious stone enclosures discovered in the Saudi Arabian desert, each forming a distinctive keyhole shape when viewed from above. These ancient constructions feature walls approximately three feet high, built from local stone and arranged in precise geometric patterns across the arid landscape. Dating to around 6500 BC, they represent some of the oldest known architectural remains in the Arabian Peninsula, predating Stonehenge by thousands of years. The structures were only identified in 2017 through aerial archaeological surveys, having remained hidden in plain sight for millennia in one of the world's most challenging environments. Some theorists have proposed that the keyhole shape represents a symbolic gateway between heaven and earth, pointing to similar keyhole designs found across multiple ancient cultures as potential evidence of shared cosmic contact. However, archaeologists note that the structures' function remains undetermined, and geometric patterns—including keyholes—frequently emerge independently in human cultures as practical or symbolic forms, making cross-cultural similarity alone insufficient to establish a connection beyond coincidence. The primary archaeological mystery is not their shape, but rather their builders' identity and original purpose, questions that current evidence has not yet resolved.
Timeline
Construction of the 19 keyhole-shaped stone enclosures in the desert near Khaybar
Discovery of the structures during aerial archaeological survey of the Saudi Arabian desert
Featured on Ancient Aliens as potential evidence of ancient symbolic connections
What the Show Claims
- ›The keyhole shapes represent a sacred symbol linking heaven and earthS16E03
- ›The structures may be connected to similar keyhole constructions built by other cultures worldwideS16E03
- ›The precise dating to 6500 BC suggests advanced planning capabilities for the time period
Theorist Takes
“These were keyhole-shaped kind of enclosures built of quite large stones and earth, and there were hundreds of them across the landscape. And they're thought to be thousands of years old, but no one knows who built them.”
From the Transcripts
“Among them are 19 formations in the shape of keyholes, formed by walls roughly three feet high. And they're thought to be thousands of years old, but no one knows who built them.”
What Archaeology Says
The discovery of the Khaybar keyhole structures emerged from systematic aerial archaeological surveys conducted in May 2017, part of broader efforts to map Saudi Arabia's previously unexplored archaeological landscape. The remote desert location had protected these ancient constructions from both natural erosion and human interference, preserving their distinctive keyhole shapes for over 8,000 years.
Scientific dating methods have established the structures' construction around 6500 BC, placing them within the Neolithic period when human societies were transitioning from hunting and gathering to more settled agricultural practices. The three-foot-high stone walls demonstrate sophisticated planning and construction techniques, requiring coordinated community effort to quarry, transport, and arrange the substantial amounts of stone needed for 19 separate enclosures.
Currently, mainstream archaeologists acknowledge they have not definitively determined who built these structures or their original purpose. The keyhole shape itself remains particularly puzzling, as this specific geometric form appears to serve no obvious practical function for typical Neolithic activities like animal husbandry, grain storage, or habitation. The precision of the construction and the repetitive nature of the keyhole pattern across multiple structures suggests they served some important ceremonial, astronomical, or cultural function for their builders.
What remains genuinely unknown is whether these structures represent an isolated cultural phenomenon specific to this region of Arabia, or if they connect to broader patterns of ancient symbolic architecture. The remote location and relatively recent discovery mean that comprehensive excavation and analysis of the site are still in early stages, leaving many questions about their builders' identity, cultural practices, and the structures' role in ancient Arabian society unanswered.
Mysteries & Fun Facts
The structures remained completely unknown to archaeology until aerial surveys revealed them in 2017, despite being thousands of years old
At approximately 6500 BC, these keyhole structures predate the famous Stonehenge monument by roughly 2,000 years
The keyhole shape is so distinctive that it can only be properly appreciated from an aerial perspective
The three-foot-high walls have survived over 8,000 years in the harsh desert environment with minimal deterioration
Planning a Visit
The remote desert location near Khaybar makes visiting these structures challenging and generally requires specialized desert transportation and local guides familiar with the terrain. Access may be restricted due to the archaeological significance of the site and the harsh desert environment.
Medina, approximately 150 kilometers southeast of the site
The cooler months from November through March offer the most comfortable conditions for desert travel in this region of Saudi Arabia.
Related Sites
Gobekli Tepe
Another mysterious Neolithic site featuring sophisticated stone construction that predates expected technological capabilities
Stone Spheres of Costa Rica
Geometric stone arrangements whose original purpose remains unknown to mainstream archaeology
Avebury Stone Circle
Ancient stone circle complex that demonstrates advanced planning and possible astronomical alignments