Rock fall susceptibility assessment at Caminito del Rey, Málaga, Spain

El Caminito del Rey in Malaga (Spain) is a popular hiking trail known for its dramatic landscapes and towering cliffs. These cliffs, reaching up to 700 meters, are prone to rockfalls, with significant incidents reported in 2022 that damaged the pathway and blocked a segment of the exit path. This study focuses on identifying parts of the Caminito most at risk from these rockfalls and introduces a step-by-step method for assessing this hazard. Our approach begins with creating a detailed 3D digital model of the Caminito, which serves as the foundation for our susceptibility assessment. Next, we collect extensive data on the types of rocks that make up the cliffs—primarily limestone and conglomerate. This data is crucial because the rock type and structure may condition the probability of rock falls occurrence in the cliffs. With the 3D model and rock data, we then simulate potential rockfalls to see where they might impact the pathways. These simulations help us understand which areas are the most exposed to these phenomena. The results of simulations may help in reducing hazard supporting decisions on solutions to decrease the exposure of visitors to rockfalls. This contribution shares the results of our assessment in the Caminito del Rey and discusses how these findings could lead to better ways to prevent rockfalls and make the pathway safer. Our research offers a practical tool for the Caminito managers to better prepare for and prevent rockfalls.