Access to regions that cannot be accessed owing to natural damage and contours that are too extreme present challenges in mapping areas prone to landslides, requiring the use of drones to retrieve data from disaster areas. The goal of this research is to (1) use arcgis to reference landslide-prone locations, (2) analyze the safe level value of landslide-prone areas using slide applications, and (3) use drone photogrammetry to model landslide-prone areas in 3D. At locations 119°40′3.36"E - 119°40′30.58"E and 5°19′32.53"S - 5°20′3.69"S, photogrammetry was employed by taking ortho photographs with mavic 2 pro type drones and secondary data of the soil layer provided by penetration test. The area of S01 with FoS 0.470 on the slope of slope 51°, the area S02 with FoS 0,527 on the slope of slope 47°, the area S03 with FoS 0.379 on the slope of slope 52°, the area S04 with FoS 0.551 on slope 46°, and the area S05 with FoS 0.763 on slope 32° are all known from the referencing map of arcgis-based landslide prone areas. The concluded that of soil in the research area is generally sandy clay soil, and the position of rainwater flow, which can be a trigger factor for landslides, so this data becomes preliminary data in early anticipation of potential landslide disasters and enhances alertness to prospective landslide disasters.

A landslide is the displacement of slope-forming material in the form of rock, material, soil, or mixed material moving down or out of the slope. The causes of landslides vary from one location to another. The purpose of this study is to determine the characteristics of soil mechanics in determining the carrying capacity of the soil in planning landslide handling with the method of building a retaining wall. The methods used in this study started from visual identification, field testing and laboratory testing. The results of this study obtained that the condition of the soil at the coordinate point S.02041'47.25" ; E.118052'48.97'' Mamuju of West Sulawesi Province in the form of limestone, loose and sandy chunks based on the test results of the core drilling soil laboratory so that a good type of construction is recommended is to use a semi-gravity type soil retaining wall.