Geologists Just Found Out What's Actually Under Yellowstone

In 2020, a 53,000-pound truck shook the ground at night across Yellowstone while 600 seismometers listened for the echo. In 2025, the results came back, and they don't match the supervolcano story you've been told. The top of Yellowstone's magma system is a sharp, flat lid about 2.4 miles (3.8 km) down. It isn't sealed like a pressure cooker. It leaks gas slowly, like a valve. In this video we look at what three major studies found under Yellowstone, why the "overdue" math is wrong by its own numbers, why a new 2026 study questions the mantle plume, and how a park superintendent spread the myth that Native people feared the geysers. Plus: the 1805 buffalo-hide map that showed Yellowstone's volcano decades before geologists knew. ⏱️ Chapters 0:00 The truck that made earthquakes 2:00 Is Yellowstone really overdue? 5:00 What the instruments found: the magma lid 9:00 The people who were never afraid 13:00 The plume debate and the real dangers 15:30 The 1805 buffalo-hide map #Yellowstone #Supervolcano #Geology