/tags/concretions concretions en-US Copyright Thu, 25 Jul 2019 09:00:00 GMT /news/2019-07-25/curious-cbus-what-are-these-mysterious-rocks-in-ohios-backyards In Columbus' Clintonville neighborhood, Elizabeth Heiser was working in her backyard when she made an unusual discovery. While removing some unwanted… Thu, 25 Jul 2019 09:00:00 GMT /news/2019-07-25/curious-cbus-what-are-these-mysterious-rocks-in-ohios-backyards Michael De Bonis