Thousands of years ago, cataclysmic floods inundated the Pacific Northwest and sent glaciers sailing across what is now Oregon. When these glaciers melted, they left behind large pieces of rock carried from hundreds of miles away. Known as glacial erratics, these rocks differ in size and composition from native rocks. The largest known glacial erratic in the Willamette Valley perches serenely atop a hill near McMinnville and weighs around 36-tons. The massive rock was transported from Canada. Visitors making the short hike to the boulder might be lucky enough to…
