Melville Koppies showcases Johannesburg’s early iron technology
Visitors to Melville Koppies are discovering the city’s only intact iron smelting furnace through guided tours and outdoor activities.
Melville Koppies welcomed many new visitors on January 18, with some opting for guided tours to marvel at the technological skills of Johannesburg’s early farmers, who mastered the challenging art of smelting iron from iron-bearing rock.
Although the same basic method is still used in modern furnaces, early farmers had no sophisticated technology to determine the ideal smelting temperature.
Instead, they relied on knowledge passed down through generations. By observing the colour of the flames in the furnace, they knew when to pump more oxygen or when to ease the bellows.
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The process was long and demanding, taking up to 18 hours to extract iron from the rock.
At one time, Johannesburg was home to hundreds of furnaces scattered across rocky ridges, including Linksfield Ridge, Northcliff Hill and Paulshof.
The furnace at Melville Koppies is the only one still intact and easily visible, offering a unique glimpse into the city’s early technological history.
Visitors can book a guided tour on Sundays at 08:00, leaving from the Melville Koppies entrance, by calling 072 348 0578. Private tours during the week and school tours are also available.
Other activities at Melville Koppies include self-guided tours, trail running, a 5km hike, monthly storytelling on the second Sunday of each month (next one on February 8), and an 8km guided hike on the last Sunday of each month.
Secure parking is available at Marks Park, Judith Road, with security provided on the Koppies. All income goes directly towards maintaining the site.
