Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.

Over 25 years ago, researchers discovered that some of these deep Earth reverberations pointed to the existence of two ...

Deep within Earth’s mantle lie two enormous regions, often referred to as "islands," which are the size of continents.

Two hidden mountains, more than 100 times larger than Mount Everest have been discovered deep underground. The two ‘islands ...

At around 620 miles high, these subsurface “islands of rock” stand more than 100 times higher than Mount Everest’s summit of around 5.5 miles, ...

New measurements suggest mysterious continent-sized masses in our planet’s lower mantle may be extremely stable features ...

These ancient buried "super-continents"—known to scientists as large low-seismic-velocity provinces (LLSVPs)—were found ...

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Deeply hidden in Earth's mantle there are two huge "islands" the size of a continent. New research from Utrecht University ...

Their existence contradicts the common assertion the Earth’s mantle is well-mixed, suggesting our models are wrong.

Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...