T The phenomenon of landslides is a disaster that occurs due to several factors on a slope. This final assesment presents an analysis of slope conditions at the location of the study area located in the village of Ciherang, District of South Sumedang, Sumedang Regency, West Java Province precisely at one of the stations on the Cisumdawu Phase II STA 17+ 850 to STA 18+ toll road development plan. The data used are field investigations data, reports on the results of technical geological drilling and reports on laboratory test results. The results of field investigations in the form of direct investigations on slopes, description of core boxes and surface mapping of geology and engineering geology. The results of the technical geological drilling report includes of groundwater levels and standard penetration test values (SPT). Reports on laboratory test results include descriptions of thin rock incisions, soil physical properties and mechanical properties of the soil. The first stage of data processing is the creation of geomorphological maps, river flow pattern maps, geological maps and engineering geological map. The next stage is sub surface modeling in the form of stratification in the section on STA 17+ 850, STA 18+ 000, and STA 18+ 125 which will then be correlated with the results of the slope stability analysis using Fellenius method with Slide 6.0 software. Stratigraphy in the study area consists of two units, the tuffaceous sandstone unit and the tuffaceous sand weathered clay. The engineering geological map is divided into two zones, namely very low rock strength zone with level VI weathering level (Residual Soil) to level V (Completely Weathered) and intermediate rock strength zone with level IV weathering (Highly Weathered) up to level III (Moderately Weathered). The results of the slope analysis at station 18+ 000 shows that the slope has the potential to be high landslides. There are 3 layers in this field, which is; weathered clay tuffaceous sand, fine tuffaceous sand and medium tuffaceous sand.