Presentation covers landslides, rockfall, talus, expansive soils and subsidence risks

Dr. Earls reviewed multiple interlinked hazards — landslides, rockfall and talus slopes — and emphasized that these hazards often coexist on the same parcel. He described signs such as tilted ("pistol grip") trees and head scarps, and recommended early geologic and geotechnical assessment. "Soil creep is the slow, continuous downslope movement... that's often a sign that a bigger, more rapid one could occur," he said, emphasizing monitoring and factor‑of‑safety design for retaining structures.