I read that there are only two underwater Calderas on Earth. The one in China is under uninhabitable area, and the one in Greece lies below one of the biggest tourist attractions in the world, Santorini.
Underneath this boat on the bottom of that sea is a deep crater that stretches many miles wide that was created by the volcanic eruption that Santorini is so famous for. It has also been speculated that this was Atlantis. It’s a unique spot on the globe, and I’m so happy to have been there. And now that the cold weather is creeping in, I wish I was STILL THERE!