Another Collapse in Saitama Pref. Road Connects Two Existing Sinkholes; Cause Apparently Was Sewer Pipe Corroded by Hydrogen Sulfide - The Japan News
https://japannews.yomiuri.co.jp/society/general-news/20250130-236158/?utm_source=piano&utm_medium=email&utm_campaign=8464&pnespid=6vfPmtIJ8aicprXtphGvv.0N_w0WpyZmgRcyHU0rokWVGrlHhzIzSqo3X0r3ZZq3T47BSw
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Seetha Ram