The Tambaya wet mill is nestled in the Mukurwe-ini District of Nyeri County and processes washed coffee using the water from the Gura river, nicknamed the Usain Bolt River, that flows from the Aberdare Ranges all the way into town. The 212 female and 248 male members of the Rumukia Farmer’s Co-operative Society care for 115 000 coffee trees, lined with other native trees to enhance local agroforestry.