Menominee Crack Tree Tilt (IMAGE) Seismological Society of America Caption Trees tilt away from either side of the Menominee Crack 'pop-up' feature. Credit Wayne Pennington/ Michigan Technological University Usage Restrictions Please include credit info License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.