Antarctica has a mysterious ‘gravity hole’ where sea levels are 420ft lower – and scientists finally think they know what caused it

Antarctica mountains and ocean. South Pole. Antarctica seascape and landscape. Glaciers.

Daily Mail News – Science & Tech

By WILIAM HUNTER, SENIOR SCIENCE & TECHNOLOGY REPORTER

Published: 10:59 EST, 17 February 2026 | Updated: 11:29 EST, 17 February 2026

Antarctica is home to many mysteries, but one of the strangest is an enormous ‘gravity hole’ deep beneath the ice.

Gravity might feel stable and constant wherever we go, but its strength actually varies over the Earth’s surface.

Where the gravity is weaker, the ocean’s surface can actually dip well below the average as water rushes towards regions with higher gravity.

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