53.1688°N, 1.7613°W.
Arbor Low is a Neolithic henge on a high limestone plateau in the White Peak of Derbyshire, England, often called the "Stonehenge of the North" by 19th-century antiquarians. A bank and external ditch about 90 metres across, originally cut several metres deep into the underlying limestone, enclose a circle of around 50 large limestone slabs together with a small central cove of three larger stones. Every one of the circle stones now lies flat on the ground — whether deliberately laid recumbent from the start or thrown down by later iconoclasts in the medieval period is still actively debated by archaeologists, with no consensus. A Bronze Age round barrow called Gib Hill stands a few hundred metres to the southwest and partly overlies an earlier Neolithic long barrow, indicating sustained ritual use of the site over more than a thousand years. Construction of the henge is dated to roughly 2500 BCE, contemporary with the sarsen ring at Stonehenge. The site sits in open sheep pasture at 375 metres elevation, with near 360-degree views to the Derbyshire moors.
From the air Arbor Low looks like an enormous stone clock face that someone has stopped.