my point wasn't manmade vs natural. It's just that Yonaguni seems to match the style of Naupa Iglesia, as opposed to a baroque stye.

Also I could photoshop this pic to appear underwater, say it's a pic of Yanaguni and you wouldn't notice. It's a quarry near Quenko, Peru.

https://qph.cf2.quoracdn.net/main-qimg-fe6c4f1f934d7f05e008a...