Unas's Valley Temple

The pyramid of Unas is a small, smooth-sided pyramid built in the 24th century BC for Egyptian pharaoh Unas, the ninth and final king of the Fifth Dynasty. It is the smallest Old Kingdom pyramid and significant due to the discovery of Pyramid Texts, which were spells for the king's afterlife incised into the walls of its subterranean chambers. The pyramid was built between the complexes of Sekhemket and Djoser in North Saqqara, with a long causeway connecting it to a nearby lake. The causeway was elaborately decorated and had a roof with a slit that allowed light to enter, illuminating the images. The site was later used for numerous burials, including those of Fifth Dynasty officials and private individuals. The underground chambers of the pyramid remained unexplored until 1881, when Gaston Maspero discovered inscribed texts, including the oldest, smallest, and best-preserved corpus of religious writing from the Old Kingdom.learn more on wikipedia