Impressive how they could build this underwater. Must have been really good at holding their breath.
(J/k)
They liked to go swimmin’ with bowlegged women...
Pozzuoli outside Naples
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This area of Italy sits on top of a super volcano like Yellowstone. Uplift and subsidence are the major factors in sea level change.
https://www.nature.com/articles/s41598-022-06928-8
From the article:
“During the last bradiseismic crisis, in 1982–84, more than 16,000 earthquakes accompanied an uplift of almost 1.8 m.”
.
They didn't hold their breath, silly.
Do the words: "World's Largest Snorkel" conjure up any images for you?
/sarc