渡良瀬遊水地の延焼が鎮火 栃木県警、原因特定進める2023/1/31 09:18社会事故・火災地方関東栃木反応記事に戻る火災があった渡良瀬遊水地の焼け跡（中央部分）＝３１日午前８時３１分、栃木県栃木市（共同通信社ヘリから）記事に戻る
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