In the Aswan city of Egypt, there was a monument made of solid rock, measuring 42 meters in length and weighing 1200 tons. The monument is thought to have been built by female Pharaoh Hatshepsut of the 18th dynasty 3500 years ago.
Obelisks are four-sided conical constructions. The ancient Egyptians would call it tekhenu. But we know them by naming the greek obeliskos (obelisk in English). These monuments were placed at the entrance of the temples and showed the creativity and engineering of Ancient Egypt. The Roman Empire continued this tradition by carrying some of these obelisks to Rome and doing similar ones themselves. Obelisks are still seen today in different countries.
The obelisk in Aswan is still half-finished while it is still under construction, also shaped in the bedrock mass. Something went wrong for an unknown reason. But it's good that it happened. Thanks to this discovery, we have an open-air museum where we can see the techniques of the ancient Egyptians making obelisk. This is an important discovery in terms of archeology history.
Source: //mymodernmet.com/unfinished-obelisk-aswan-egypt/
