
Japan's Sinkhole Anomalies and Historical Earthquake Precursors: Are We on the Eve of a Major Seismic Event?
In early 2025, sudden massive sinkholes and groundwater fluctuations struck densely populated areas in Saitama and Chiba, situated right at the tri-plate tectonic convergence zone of Kanto. Comparing historical precursors from the 1923 Great Kanto, 1976 Tangshan, and 2011 Tohoku earthquakes to evaluate current seismic risks and disaster readiness.








