Amongst the hills south of Aswan there is a quarry which once provided the Egyptians with red granite for their temples, and within the quarry lies an unfinished obelisk. Three sides of the obelisk had been completed before a flaw was discovered. The Egyptians began cutting the Obelisk shorter before a second flaw caused them to realise that the flaw was within the granite rather than caused by a mistake in the cutting, and the obelisk was abandoned.
Had the obelisk been completed it would have been 134 feet high, and weighed 1197 tons, this would then have been transported via the Nile to a temple site and erected. Quite an impressive feat to accomplish over 1000 years BC!