well rich they mention the eastern gate to protect against invaders-foreigners,

[weekly.ahram.org.eg]

and they talk about the invaders =
Palace of the Hyksos
and had the
Oldest waterpipe unearthed in Egypt
3,500-year-old water channel, half a meter in diameter


the volcanic activity catches my eye - near 1500bc
[news.nationalgeographic.com]

but this horus road - also had other finds
[weekly.ahram.org.eg]