Keywords: Cerro Prieto.jpg Cerro Prieto Dark Hill is a small 223-m-high compound rhyodacitic lava dome in México http //www volcano si edu/world/volcano cfm vnum 1401-00- volpage photos photo 083036 1959 Marshall Reed U S Department of Energy PD PD-USGov Volcanoes of Mexico Cerro Prieto Lava domes Hot springs of Mexico Rhyodacite 1959 in Mexico |