The Bonsa River is one of Ghana's most historically significant gold-bearing rivers — a tributary of the Ankobra system in the Western Region, flowing through the Tarkwa–Prestea–Bonsa belt that has been mined for gold for well over a century, and which gave its name to the town of Bonsa and to the famous Bonsa tyres and rubber brand. The Bonsa rises in the forested hills of the Western Region and runs through the Tarkwaian rock formations — the same geological belt that made Tarkwa, Prestea, Bogoso and Obuasi the heartland of Ghanaian gold. Alluvial gold along the Bonsa and its feeder streams was worked long before Europeans arrived; Akan and later Wassa miners panned the gravels of the Ankobra basin for centuries. When colonial mining companies moved in during the late 1800s and early 1900s, the Bonsa valley became a focus of dredging and alluvial operations, and the river's name attached itself to the surrounding community. The Bonsa area is also famous for rubber. The Bonsa Rubber Estate, established in the mid-20th century near the river, made "Bonsa" a household word in Ghana — the name was used for tyres and rubber goods, so much so that many Ghanaians grew up calling any tyre "Bonsa." That is a rare thing: a river that became a brand. Today the Bonsa is at the centre of Ghana's most urgent environmental debate. The Tarkwa–Bonsa–Ankobra corridor has been heavily hit by illegal small-scale mining (galamsey), which has silted the river, turned its water brown and turbid, and contaminated it with mercury and other chemicals. Communities along the Bonsa and the Ankobra have lost clean drinking water and fishing livelihoods. This is precisely why the government's current push — including the Responsible Cooperative Mining and Skills Development Programme (rCOMSDEP) launched this week in the Ahanta West and Mpohor Fiase areas of the Western Region — is aimed at formalising small-scale mining so that rivers like the Bonsa are not destroyed. The Bonsa is, in a real sense, the test case for whether Ghana can mine gold without killing its water. For anyone visiting or researching the area: Bonsa sits in the Western Region near Tarkwa, reachable from Takoradi via the Tarkwa road. It is mining country — expect artisanal mining activity, degraded riverbanks, and a landscape shaped entirely by gold. The nearby Bonsa Rubber Estate and the old colonial-era mining infrastructure give it a layered history: pre-colonial panning, colonial dredging, mid-century rubber, and now the galamsey crisis. There is an Akan proverb that fits the Bonsa well: *"Sika wo antaban, nanso etumi kɔ akyi"* — gold has no wings, yet it can fly away. The Bonsa has given Ghana a great deal of gold, and in return Ghana has given the Bonsa silt, mercury and brown water. The river is a reminder that the wealth and the wreckage come from the same source.