Cao Minh in Dong Nai
https://doboinusunny.com/khu-du-lich-cao-minh/#Du_lich_sinh_thai_la_gi
Its 'wealth' comes from the 4 surrounding mining towns of Chililabombwe, Chingola, Mufulira and Luanshya. So you thought right, rocks and minerals are my company! Gouda is made from cow milk that has been cultured.