/news/tags/mystery-river Mystery River en-US Copyright Thu, 26 Dec 2019 09:50:00 GMT /news/environment-energy/2019-12-26/oh-really-dives-into-the-question-of-what-happened-to-the-blue-hole This story was originally published on January 22, 2019.Castalia, Ohio, is home to The Blue Hole, which was a tourist attraction for almost a century.… Thu, 26 Dec 2019 09:50:00 GMT /news/environment-energy/2019-12-26/oh-really-dives-into-the-question-of-what-happened-to-the-blue-hole Kabir Bhatia