The Mystery of the World’s Largest and Deepest Gravity Hole The sea level here is hundreds of feet lower than the rest of the ocean. by Frank Jacobs, November 3, 2023 Did You Know? In the 20th century, a Dutch scientist discovered a gravitational anomaly in the Indian Ocean. The earth’s pull was significantly lower in this region of over a million square miles. More recent researchers believe that they’ve figured out the explanation. The world's largest gravity hole...The piece of sunken ocean is the size of India. ESA/HPF/DLR The gravity hole in the Indian Ocean is significantly deeper and bigger than any other gravitational anomaly. ESA – GOCE High Level Processing Facility