Ronnie Alonzo is a Filipino researcher who places Atlantis in the Atlantic Ocean. He bases his theory on his interpretation of markings he discovered on a stone discovered in the Zimbales Mountains in the Philippines.
Alonzo formerly supported his theory with a website(a). There is also a related video clip(b) available.
Unsurprisingly, Alonzo’s highly speculative ideas have found little support.
(b) https://www.youtube.com/watch?v=3zs2rUU7T-Y (Spanish)