Unfinished obelisk in Aswan (Egypt) - largest known ancient obelisk, 1500 years old.10:54 AM
The obelisk's creators began to carve it directly out of bedrock, but cracks appeared in the granite and the project was abandoned. Originally it was thought that the stone had an undetected flaw but it is also possible that the quarrying process allowed the cracking to develop by releasing the stress. The bottom side of the obelisk is still attached to the bedrock. The unfinished obelisk offers unusual insights into ancient Egyptian stone-working techniques, with marks from workers' tools still clearly visible as well as ochre-coloured lines marking where they were working.
During the earliest ages, the Ancient Egyptians knew the so-called " Pn-pn", which was a pyramidal stone with a pointed top and according to their beliefs the "Pn-pn" symbolized the primeval hill from which the world first appeared. Then, in the course of time, this Pn-pn evolved to be an obelisk usually made of granite with a pyramidal shape on top.
In the New Kingdom, especially at the time of the 18th and 19th Dynasties, the Kings used to erect obelisks in front of the different temples for religious and political reasons.