Catacombs of Kom El Shoqafa The Catacombs of Kom El Shoqafa are located in Alexandria, Egypt. Half a kilometer to the northeast is the Serapeum of Alexandria, which is another archaeological site in the area. The Serapeum of Alexandria is considered to have been built by the Greeks in the 3rd century BC. Coordinates 31.178942, 29.893170 Description The site is thought to date to the Hellenistic period, and Roman, Greek, and Egyptian cultural attributes can be found throughout. The site is considered to have three levels dug into the rock, being up to 35 meters deep. The Catacombs consist of a triclinium, dining room, rotunda, Hall of Caracalla, and sarcophagi. The entrance is from the southeast side near the staircase at a 40° angle. The Catacombs' size is 25 metres by 50 metres. It is thought the site was an earlier burial ground where visitors brought clay pots of food for themselves, leaving the pots as they departed. Hence, this is where the name derived from. Analysis The tomb...
Grianan of Aileach The Grianan of Aileach is a hillfort on Greenan Mountain at Inishowen in County Donegal, Ireland. The main structure is a stone ringfort, thought to have been built by the Northern Uí Néill, in the sixth or seventh century, it has been identified as the seat of the Kingdom of Ailech and one of the royal sites of Gaelic Ireland Coordinates 55.023780,-7.427488 Measurements The altitude at the location is 225m with an average of 215m in the area around the ringfort. The ringfort is 100ft wide (30.48m) with the walls 16.4ft (5m) high. Alignment The following shows that at current alignment, the hillfort's angles don't mean anything, but at 2° further rotation, there is a connection Assuming that the ringfort is dated to 700 ad, then the tilt from construction would be 2°. The entrance is measured at 3° at maximum tilt, then adding 2° would give an angle of 5° or 14° on the far wall. If ...