The 5,000-year-old mysterious Rujm el-Hiri in the Golan Heights is thought to have taken at least 25,000 working days to build.
The consensus is that it was some kind of calendar.
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The 5,000-year-old mysterious Rujm el-Hiri in the Golan Heights is thought to have taken at least 25,000 working days to build.
The consensus is that it was some kind of calendar.