This is a picture showing Cerro Negro in 1968. An active volacano in Nicaragua, the youngest in Central America. It is part of the mountain range Cordillera de los Maribios and last erupted in 1999. This is a cinder cone volcano, the volcano itself is built upon layers of volcanic ash and bigger volcanic fragments, such as hardened pieces of magma (scoria, volcanic bombs), from multiple or continuous eruptions.  A cinder cone volcano is very similar to composite volcanos in shape yet smaller. You can find many cinder cone volcanos next to composite volcanos. These volcanos erupt by the expansion of volcanic gases and vapour causing the magma to rise and eject as fragments with big clouds of dust and ash like we see in the picture above.