Even bigger is the famous Madison Boulder in Madison, New Hampshire, considered the largest glacial erratic in the United States. The glacier moved it from a ledge located about two miles north and west in the town of Albany. It is the largest of the Foothills Erratics Train, a series of boulders stretching over 700 â¦ Learn more âOf fine museum quality, the boulder is comparable to the glacial erratic located in front of the geology museum at Orton Hall on the OSU campus,â commented Grapes. It has broken into three pieces since coming to rest. This is the largest glacial erratic found in the Willamette Valley. Other large erratics that can still be seen are St. Peterâs Rock four miles southeast of Alta Vista in Chickasaw County, a granite specimen five miles west of Cedar Falls in Grundy County, and a granite boulder in Grammer Grove Park in Marshall County. Learn more âOf fine museum quality, the boulder is comparable to the glacial erratic located in front of the geology museum at Orton Hall on the OSU campus,â commented Grapes. The city of Lake Stevens inherited a majestic relic of the Ice Age Floods, which in 2017 was nestled in the trees on a steep ravine in a 20-year-old subdivision of multi-level homes. Daggett Rock - Maine's Largest Glacial Erratic Maine Geological Survey Daggett Rock Daggett Rock is approximately 80 ft long, 30 ft wide, and 25 ft high and may weigh as much as 8000 tons. Even bigger is the famous Madison Boulder in Madison, N.H., considered the largest glacial erratic in the United States. A granite boulder â¦ Glacial erratics are an easily observed piece of Iowaâs geological â¦ All erratics are of a different rock type. The completed bronze equestrian statue of General â¦ The power of the glacier can be appreciated by determining the source of the â¦ The largest glacial erratic found in Ohio is located just east of Sunbury off Hartford Road. Glacial sediments often contain a range of rocks of different kinds, which can be used to reconstruct the âprovenanceâ 1, or source, of the sediment and therefore the direction of ice flow. The largest glacial erratic found in Ohio is located just east of Sunbury off Hartford Road. The largest crystalline erratic is located north of Hartford (Croton) Road east of the Conservation Club on private property. It is a type of rock not normally found in Oregon because it came from the Northern Rocky Mountains. Visitors at Erratic Rock can look out across the vast landscape and imagine the huge amount of water that filled the Willamette Valley during the Ice Age Floods." This 83-foot-long behemoth weighs approximately 4,662 tons. Erratics can range from large boulders to smaller stones and pebbles. Local history books, and old geography books say the boulder â¦ Ten kilometers west of Okotoks on Highway 7 is the Big Rock, the largest glacial erratic in the world. At 55-ft by 35-ft and an estimated 5,000,000 pounds, the granite boulder â technically, a âglacial erraticâ â was moved to this spot by a glacial ice sheet somewhere between 11 â 20,000 years ago, most likely originating from the Bronx or Westchester. Referred to as the Lake Stevens Monster, the giant rock is considered the largest erratic in Washington and maybe in the United States. Sunbury's Crystalline Erratic Left by Glacier When the glaciers melted out of Ohio many large rocks (known as erratics) were left behind. These boulders are believed to have traveled from Jasper during the Ice Age when a landslide deposited them on an advancing glacier. This 83-foot-long behemoth weighs approximately 4,662 tons.