Bonaventure Island, Perce, Quebec, Canada, July 3, 2018Cantwell Cliffs, Hocking Co. OH January 18, 2019Cobble, colorful, Au Train Bay beach, Upper Peninsula, Michigan, October 14, 2018Colorful cobble, Miners Beach, Pictured Rocks National Lakeshore, Upper Peninsula, Michigan, October 12, 2018Conkles Hollow, Hocking Hills, Hocking County, Ohio, January 17, 2019Limestone Cliffs, Highlands Nature Sanctuary, Highland County, Ohio, April 21, 2021Old Man's Cave, Hocking County, Ohio, February 20, 2018 (3)Rhododendron Cove, Fairfield County, Ohio, June 28, 2020