Yes, what looks like a ocean bay is a river which eroded the foundations of the structure.
Compare with the Magdalena Flood in Europe in 1342 p. 27 of Black Death and Abrupt Earth Changes in the 14th Century. (side bar to right)
Myanmar Pagoda Collapse After Heavy Rainfall
Solar History: The Connection of Solar Activity, War, Peace and the Human Mind in the 2nd Millennium Kindle Edition
Ap index peace 1850 -2020
Covid-19 is the new Mediaeval Leprosy: a Historical Comparison of Isolation, Religious Fervor and Medical Tyranny
Cosmic rays Solar Maximum
Sunspot Numbers NASA 1610- 2019 plus projection SC 25
Black Death and Abrupt Earth Changes pdf
![Kp-Index [0-3] Green - Stable/Calm Magnetosphere. [4] Yellow - Unstable Magnetosphere. [5+] Red - Geomagnetic Storm Conditions](https://spaceweather.gfz-potsdam.de/fileadmin/kpindex/ql_bar.gif)
Kp-Index [0-3] Green - Stable/Calm Magnetosphere. [4] Yellow - Unstable Magnetosphere. [5+] Red - Geomagnetic Storm Conditions
Climate-Culture Revolution, Illustration: expresszeitung.com
World map of natural hazareds
Abrupt Earth Changes 