Did You Know?
The Coleskop Heliograph Site is located near Colesberg in the Northern Cape, a town established in 1830 on the route between Cape Town and the interior. The site dates to around 1900, a period when heliographs—mirror-based devices that flashed sunlight in coded signals—were used for military communication across vast, open terrain. During the Second Anglo-Boer War (1899–1902), the British and Boer forces employed heliograph stations on high vantage points like Coleskop to relay messages over distances that could exceed 50 kilometres, especially where telegraph lines were cut or unreliable. Colesberg itself was a strategic garrison town during the war, with British forces occupying it in late 1899 and using surrounding hills for observation and signalling. The specific operational details of the Coleskop station are not widely documented, but its location on a prominent koppie (hill) overlooking the semi-arid Karoo landscape would have made it ideal for line-of-sight communication with other stations in the region. Today, the site is a reminder of the pre-radio era of military signalling, and while no substantial physical remains are known to survive, the hill retains its historical association with the war-time communications network.
AI-assisted · may contain inaccuracies