Published: Dec. 1, 2015

On a tight curve on a dirt road, rock fall spat off the top of the 30-foot bank, pelting the road. By the looks of the piles of debris in the carriageway, it had been doing this for hours. Rockslides seemed to be a normal occurrence along the road to the Río Marañón in Peru’s Andean Cordillera Blanca. This landscape is active!

Read National Geographic article by expedition members Alice Hill (GEOG PhD student) and Jaime Goode