Vitrified Forts: Extreme Thermodynamics of Celtic Architecture

Scattered across the Scottish Highlands are the ruins of ancient Celtic hillforts that defy the fundamental laws of geology. Their massive stone walls were not just stacked; they were subjected to temperatures so extreme that the granite literally melted, fusing the individual rocks into a solid mass of black glass. This process, known as vitrification, requires sustained temperatures exceeding 1,000 degrees Celsius. Achieving this level of thermodynamic intensity in an open-air environment using Iron Age technology is practically impossible. Archaeologists have debated for centuries whether this was a brilliant, deliberate architectural technique designed to strengthen the walls, or the result of apocalyptic, destructive fires set by invading armies during brutal tribal warfare. This book investigates the bizarre thermodynamics of ancient Scottish architecture. You will explore the complex chemical reactions required to melt solid rock, the modern experimental archaeology attempting to replicate the phenomenon, and the violent historical context of the Iron Age. Uncover the fiery mysteries of the ancient Celts. Discover how extreme thermodynamics created glass fortresses that continue to baffle modern structural engineers and geologists.