HS0002

Did You Know?

Op die koppie is a heliograph site located near Deëlfontein, close to De Aar in the Northern Cape province. The site dates to 1899, during the Second Anglo-Boer War (1899–1902). Heliographs were used by both British and Boer forces for long-distance communication, employing mirrors to reflect sunlight in coded flashes. De Aar was a strategic railway junction and a key British military base during the war, making the surrounding hills, including Op die koppie, important for signaling and observation. The site is one of several heliograph positions in the region, though specific details about its use or structure are limited in available records.

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