Landslide Analysis combining Laser Scanning and Photogrammetry

After a sequence of weeks heavy raining, catastrophic mass movement occurred in the parish Palmeira de Faro, Esposende (N Portugal) on November 23, 2022. The collapsed slope presented maximum height about 21 m and length 45 m. In order to document analyse this case from geotechnical perspective, general survey was devised including use aerial photography, laser scanning conventional topographic methods. results obtained showed that these techniques provide very accurate abundant information is essential support comprehensive documentation features variables slope. mechanisms involved collapse are still under investigation, causes such as excessive rainfall previous months or geologic conditions being considered, although currently existing seems indicate for combination debris flow / rock slide driven event.