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Space Daily
spacedaily.com > n-researchers-placed-650-geophones-along-yellowstones-roads-and-sent-a-vibrating-truck-to-110-different-spots-to-deliberately-shake-americas-most-visited-supervolcano-and-the-echoes-revealed

Researchers placed 650 geophones along Yellowstone's roads and sent a vibrating truck to 110 different spots to deliberately shake America's most-visited supervolcano, and the echoes revealed a layer 2.4 miles down that is roughly 86 percent solid rock.

4+ day, 14+ hour ago   (177+ words) What lies beneath Yellowstone's surface—and how close is the molten rock to breaking through? By Life Signs · Edited by Nato Lagidze Published September 9, 2026 · How we edit That imaging revealed a distinct, laterally continuous reflector less than about 100 meters thick…...