In this video, we uncover some of the most mind-blowing geographic discoveries that completely challenge what we thought we knew about our planet. From a hidden ocean beneath Earth’s crust to ancient cities lost in the Amazon, these revelations will change how you see the world. We’ll explore how rivers reversed, deserts were once rainforests, and new continents are being discovered even today. Get ready to question everything—because the Earth still has secrets it's only just beginning to reveal. 0:00 Intro 1:07 A Hidden Ocean Beneath the Earth’s Crust 2:48 The Amazon River Once Flowed in the Opposite Direction 4:46 The Sahara Desert Was Once a Lush Rainforest 6:27 A New Continent Was Discovered—Zealandia 8:05 The Largest Volcano on Earth is Underwater 9:56 A Lost Ancient City Found in the Amazon 12:00 The Deepest Point on Land is in Antarctica 13:07 An Ancient Mega-Lake Under the Sahara 14:16 Earthquakes Can Reveal Hidden Structures Below the Surface 15:27 A Gigantic Coral Reef Was Found Off the Coast of Australia 16:31 A Desert in Europe? 17:39 A Hidden Network of Lakes Beneath Antarctica 18:38 Ancient Coastlines Reveal a Different Sea Level History 19:37 A Massive Freshwater Reservoir Under the Ocean 20:44 A Mysterious Magnetic Anomaly in the South Atlantic 21:58 New Deep-Sea Creatures Discovered in the Mariana Trench 23:10 A Hidden Cave Network Underneath the Ice in Antarctica 24:18 Ancient Fossilized Rainforests Found Under Antarctica 25:19 A Massive Subterranean River Flowing Beneath the Amazon 26:12A New Ecosystem Discovered Deep in a Sinkhole in China 27:07 Mysterious Blue Holes Found in the Ocean 28:03 The World’s Largest Cave System Still Being Explored 🔬 Topics Covered: 🌊 Hidden Ocean Beneath Earth A massive ocean is trapped in minerals deep inside Earth—three times bigger than all surface oceans! 🌎 Amazon River Reversed The Amazon once flowed west, but tectonic shifts reversed it toward the Atlantic millions of years ago. 🌴 Sahara Was a Rainforest 10,000 years ago, the Sahara was green with rivers, animals, and early human settlements. 🗺️ Zealandia: The 8th Continent Mostly underwater, Zealandia meets all criteria to be Earth's hidden eighth continent. 🌋 Largest Volcano Underwater Tamu Massif, not Mauna Loa, is Earth's biggest volcano—hidden beneath the Pacific Ocean. 🏛️ Lost Amazonian City Found LiDAR tech reveals vast ancient Amazon cities, rivaling early civilizations in size and planning. 🧊 Deepest Land Point in Antarctica Beneath Denman Glacier lies the lowest land point on Earth—over 3.5 km below sea level. 🌊 Ancient Mega-Lake in Sahara Mega Chad once covered 400,000 km² beneath the Sahara—now a dry remnant of climate change. 🌐 Earthquakes Reveal Inner Secrets Seismic waves uncover strange mantle structures deep within Earth’s hidden layers. 🐠 Massive Coral Reef Discovered A 500-meter-tall reef taller than the Empire State Building found off Australia in 2020. 🏜️ Desert in Europe? Spain’s Tabernas Desert has extreme climate and grows due to desertification and climate change. ❄️ Antarctica’s Subglacial Lakes Dozens of hidden lakes lie beneath Antarctic ice, possibly harboring ancient microbial life. 🌲 Rainforest Fossils in Antarctica Fossilized trees show Antarctica once had temperate rainforests during the Cretaceous period. 🌊 Hamza River Beneath Amazon A slow, massive underground river flows deep below the Amazon, affecting the rainforest’s water. 🌳 Hidden Sinkhole Forest in China A newly found sinkhole in China hosts a unique, untouched forest with giant ancient trees. 🌀 Mysterious Ocean Blue Holes Giant underwater sinkholes may hold ancient climate secrets and alien-like microbial life. 🕳️ World’s Largest Cave Still Growing Son Doong Cave in Vietnam is still revealing new chambers, rivers, and its own misty weather system. 🌊 Freshwater Under the Ocean Gigantic underground aquifers beneath the seafloor may hold trillions of liters of fresh water. 🧭 South Atlantic Magnetic Anomaly Earth’s magnetic field weakens in this area, puzzling scientists and disrupting satellites. 🐟 New Creatures in Mariana Trench Deep-sea missions found bizarre life forms in total darkness and extreme ocean pressure. 🔥 Antarctic Volcanic Caves Warm caves under Antarctica’s ice from volcanoes may host unique ecosystems and life. 🚀 Watch more videos in this playlist: Recent Discoveries in American States • Recent Discoveries Across U.S. States 🎬 Subscribe for new videos: / @discovertube2024 #unitedstates