Rukira wet mill was built in 1979 and is situated in Rukira village between the River Mumwe and the River Thuti. Othaya Farmers Co-operative Society has its own dry mill located in Gatuyaini. This is where all the coffee processed in the various wet mills is taken for further processing. After milling is done, the coffee is packed in export bags. The Society has a cupping laboratory where quality analysis is done by a qualified cupper before the coffee is taken to the warehouse ready for marketing. Most of the coffees from Nyeri develop and mature slowly, producing extra-hard beans. The region is traditionally known as the heart of Kenya, with cool temperatures and red volcanic soils rich in phosphorus. The fertile central highlands lie between the Eastern base of the Aberdare (Nyandarua) Range, which forms part of the Eastern end of the Great Rift Valley, and the Western slopes of Mt. Kenya. Nyeri town (county headquarters) acts as a destination for those visiting Aberdare National Park and Mt. Kenya’s black gold coffee.