Avalanche Detection (IMAGE) American Geophysical Union Caption The avalanche buried Highway 21 in piles of snow and debris eight meters (26 feet) high in some places, blocking off the roadway. Credit Credit: Scott Havens Usage Restrictions Must credit 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.