Scientists Discover Giant Mountains 100 Times Taller Than Everest Beneath Earth's Surface

• Scientists found two huge 'mountains' beneath Earth's surface.
• These structures, LLSVPs, sit 1,200 miles underground near the Earth's core.
• LLSVPs slow seismic waves, indicating they are hotter and have a large grain structure.
• Research suggests LLSVPs might be from a planet called Theia, which hit Earth.
• This discovery challenges the idea of the mantle being in constant motion.
• LLSVPs lie beneath Africa and the Pacific, critical for Earth's geological history.
• Findings imply Theian materials form roughly 2% of Earth's mass in these regions.