There is a ‘gravity hole’ in the Indian Ocean, and scientists now think they know why
https://edition.cnn.com/2023/07/24/world/gravity-hole-geoid-low-indian-ocean-scn/index.html
Indian Ocean is so wide that there must be something that is not known to even researchers.
By the way, if the earth is an ellipsoid, there must be gravity hole around opposite side of the earth. Is there research for that?
