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...
Ganghwa Bugeunri Jiseokmyo
Ganghwa Bugeunri Jiseokmyo is a dolmen in Incheon, South Korea.
Along with Ganghwa, there are the Gochang and Hwasun dolmens sites, which were used as grave markers, and for ritual purposes during the first millennium BCE when the Megalithic Culture was prominent on the Korean Peninsula.
Ganghwa has an additional capstone southwest at an angle of 67° towards the northeast, Ganghwa itself is at an angle of 37.75° towards the northeast which is it's latitudinal location.
Coordinates
37.773610,126.437610
Similarity
Lanyon Quoit a dolmen in Cornwall and Spinster's Rock represented the location at maximum and minimal tilt using its coordinates and angles.
The difference in angle at Ganghwa is 29.25°, which is too large for tilt, which has ranged from 18.853°-20.05°.
If 20° tilt is used, then a year of 3982 bc is produced, which is older than the 700-300 bc for the culture that lived there.
A different way is that the altitude at the location is 13m and, if subtracted from 29.25° equates as 16.25° which then can be subtracted from 20°.
The 3.75° angle that it produces equates to 434 bc and a year in between 700-300 bc.
29.25-13=16.25
20-16.25=3.75
3.75÷1.55=2.41935
2.41935×1000=2,419.35
2419.35−1985=434 bc
Conclusion
Although the altitude seems low, it is correct, and in less than a kilometre, the altitude increases to 135m before increasing to 250m.
The similarity with Lanyon Quoit and Spinster's Rock is correct. The altitude is subtracted from the angle difference and then subtracted from 20°.
The error here depends on what was considered as maximum tilt but also what was altitude, which has varied inconsistently.
It is possible that they used Gravinis as a copy or idea, which is angled at 36° towards the southwest and 11m above sea level at maximum tilt.
Unlike their British counterparts, one dolmen is only a capstone, which is tilted at 67° at the vertical, and it matches its angle towards the northeast.
The support stones of Ganghwa are also tilted at an angle of 67° and 20°, for the 20° is impossible to get an accurate figure due to its shape.
The angle between them is 47° at 124m with an area of 3835m². It is possible to get a number of 3982 (from above) as the area if the distance measured between them is 126.36m.
As it stands, Ganghwa represents the year of construction at the location along with maximum and minimal tilt.
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