It’s an intact (1.5 mile wide) space ship? Crashed into a crater of a 5 mile wide volcano ? 2 miles down in the South Pacific Ocean, 573 miles due north of Easter Island. You can see for yourself right now on Google maps or Google earth - put in satellite mode then just type in 18.8s109.2w
Zoom in/out to see it. YouTube video link below
https://youtu.be/QZQvSGCsvQs