See caption
The road that appears to be running downhill is actually running uphill, and vice versa. Photographs taken from the middle of the brae. Google map
Source: Wikimedia Commons

The Electric Brae, known locally as Croy Brae, is an antigravity hill on the A719, between Drumshrang and Knoweside, on the south-west coast of Scotland.[a] It is an optical illusion caused by the layout of the land through which it runs, making it seem as if a freewheeling vehicle is drawn uphill by some mysterious “magnetic” attraction.[1] A key element of the illusion at the Electric Brae appears to be a misperception of the horizon by the observer, caused in part by the hills in the background.[2]

Similar antigravity hills, also known as spook hills or magnetic hills, are found across the world. Most are relatively narrow, short stretches of road, 50–90 metres in length, set in a hilly landscape with no surrounding buildings;[2] the Electric Brae is relatively long, at about a quarter of a mile (400 m) in length.

Citations



Bibliography


Alexander, M. (2002). A Companion to the Folklore, Myths & Customs of Britain. Sutton Publishing.
Bressan, P., Garlaschelli, L., & Barracano, M. (2003). Antigravity Hills are Visual Illusions. Psychological Science, 14(5), 441–449. https://www-jstor-org.libezproxy.open.ac.uk/stable/40064165

Notes


  1. Brae is a Lowland Scots word for the slope or brow of a hill.