Glacial Erratic

The large granite boulder just off the trail and the much larger one in the creek bed were carried here from Canada during the last ice age over 15,000 years ago. Large ice sheets over a mile thick slowly moved south to cover much of New York State. As these glaciers melted they released rocks and debris, which buried many stream valleys including the valley surrounding Fall Creek. The bowl-shaped slope surrounding this woodland was carved by Fall Creek as it eroded through the glacial debris that filled its valley.