Granite general, descriptive field term for lighter-colored, coarse-grained igneous rocks. Petrographic examination is required for identification of specific types of granitoids. The extrusive igneous rock equivalent of granite is rhyolite. Granite is nearly always massive (i.e., lacking any internal structures), hard, and tough. These properties have made granite a widespread construction stone throughout human history. The average density of granite is between , its compressive strength usually lies above 200 MPa, and its viscosity near STP is 3–6·10 Pa·s. The melting temperature of dry granite at ambient pressure is ; it is strongly reduced in the presence of water, down to
Rock art of Uganda thought. Archaeologists strive to better understand cultures of the past, figuring out the meanings behind these paintings could help archaeologists to better understand what culture made them. Nyero is one of the most important rock art sites not just in Uganda but in Africa as well. It has well-preserved rock paintings that are utilized in study of rock art. The Nyero site was discovered by C.A.E Harwich in 1945. Nyero was the first rock art site to be catalogued and described in full within Uganda. Nyero itself is composed of granite, and just under 40m high. There are two areas