Carrag-Luz, often romantically mistranslated as “Love Rock,” actually derives from the Cornish carrag luz, meaning “grey rock.” This granite outcrop forms part of a dramatic geological boundary on the Lizard Peninsula. At Polurrian, this boundary marks a significant shift in Cornwall’s bedrock—from the slate formations of the north and west to the hornblende schist that defines the Lizard. The grey rock of Carrag-Luz, a granite dyke, cuts through surrounding metamorphic and sedimentary rocks, having been formed deep within the Earth’s mantle during the Devonian period, around 417 to 354 million years ago. This dyke is strikingly different from the surrounding rock, which developed later from sediments deposited in ancient deep seas. Over time, the region’s softer slate has been steadily eroded by the sea, giving rise to the coves, caves, and jagged coastline that now characterise this part of Cornwall. Harder rock formations like Carrag-Luz have resisted this erosion, leaving distinctive headlands such as Hartriza Point, while the surrounding mudstones and breccias reveal a complex geological story shaped by ancient volcanic activity and tectonic forces. In 1967, the landowner Mr. Peter Hadley discovered the remains of an Iron Age fort near Lankidden, perched atop the craggy cliffs of Carrag-Luz. The following year, excavations unearthed a wealth of prehistoric material—worked flint tools, pottery sherds, and traces of a roundhouse—within the small fields enclosed by ancient granite hedges. These field systems, remarkably preserved in this remote coastal area, provide a glimpse into a landscape that has changed little since prehistoric times, having escaped the widespread hedge removal of the Agricultural Revolution. Known locally as Lankidden or Carrick Luz Fort, the site is classified as a promontory fort, using the natural protection of steep cliffs on three sides. Its inland boundary is marked by a 4-metre-high rampart and a buried ditch that cuts across the headland. First recorded by the antiquarian Thomas in 1851, the site stands as a powerful testament to early human settlement in Cornwall.