Isotropic analysis, a method used to study the internal structure of materials, has identified Brimham Rocks as the most likely source of stones used in the Devil's Arrows, a prehistoric stone alignment in North Yorkshire, rather than the nearby Plumpton Rocks. The Devil's Arrows is Britain's tallest standing stone alignment, yet the origin of its stones has long been a mystery. Recent research, published in the Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, confirms that the stones were transported by human hands over a distance of 18 kilometers (11 miles), not by glacial movement as was once believed. This finding highlights the significant effort and organization of Neolithic communities in moving massive stones to create such structures. The Devil's Arrows, like Stonehenge, is part of a broader tradition of megalithic architecture found across Britain and Ireland. Other notable examples include Calanais in Scotland, Newgrange in Ireland, and Avebury in England. These sites, often built with large stones, suggest complex social and spiritual practices of the Neolithic period. However, while Stonehenge has received extensive study, including recent chemical analyses that traced its stones to distant quarries, similar attention has not been given to other monuments like the Devil's Arrows, despite their cultural and historical importance. Jim Leary, a co-author of the study from the University of York, emphasized the significance of the discovery. "Sites in southern England and Scotland receive considerable attention, but monuments like the Devil's Arrows have remained comparatively understudied despite their significance," he said. The research reveals that Neolithic communities in Yorkshire transported multiple 25-ton stones over long distances to construct the Devil's Arrows, turning a local site into a sacred landscape of great spiritual and cultural importance. Similar findings have been made at Stonehenge, where chemical analyses have identified the origins of its stones. A 2019 study found that the 42 bluestones forming the inner ring of Stonehenge came from western Wales, while the outer sarsen stones were sourced from Marlborough Downs, located about 25 to 30 kilometers (17 miles) north of Stonehenge. Marlborough Downs is known for having the largest concentration of sarsen stones in the UK. These discoveries provide insight into the mobility and resource management of Neolithic communities, showing that they were capable of transporting massive stones over significant distances to construct monumental sites.