Stonehenge has baffled experts for some time, both for its possible use and how, without the use of powerful machinery, it managed to get built in the first place.
On the latter mystery, it turns out that transporting the massive stones may not have been as big a challenge as is typically imagined.
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Based on a recent experiment by University College London, rolling the rocks along timbers would have made their 140-mile transport somewhat effortless.
In testing the method, researchers set up a rolling base using rope and birch trunks, placed a one-ton stone on top of it, and had people pull the load forward.
A crew of as few as 10 was able to move the stone along at a pace of 10 feet per 5 seconds. Notably, they were working on a flat expanse of land.
However, said one of the researchers: "There would have been steep slopes to navigate... but actually this kind of system works well on rough terrain."