In this thesis, we present the design, establishment, surveying and processing of a geodetic network for horizontal monitoring of the stability of a retaining wall and a supporting wall along the regional road R2-408/1375 Žiri–Trebija in the settlement of Selo. The network consists of three reference points, seven instrument stations and 38 control points stabilised on the two walls. A zero-epoch and a firstepoch survey were carried out using a Leica Geosystems Nova TS60 precision total station and the sets of angles method. The observations were pre-processed, the measured distances were reduced, and height differences were calculated. Free and constrained horizontal network adjustments and a vertical network adjustment were then performed. By comparing the coordinates and heights obtained from both epochs, horizontal and vertical displacements of the control points were determined, and their significance was assessed by considering the corresponding standard deviations. The achieved positional accuracy of the control points was better than 2 mm, while the mean positional standard deviation obtained from the constrained adjustment was approximately 0.5 mm. The horizontal displacements ranged from approximately 0.7 mm to 4.4 mm and were assessed as statistically significant at 31 of the 38 control points. A significant vertical displacement was detected only at control point 8; however, the adopted significance criterion was exceeded only marginally. Due to the large temperature difference between the two surveys and the availability of only two measurement epochs, the detected changes cannot yet be reliably classified as permanent displacements. The established geodetic network provides a suitable basis for the continued geodetic monitoring of both walls
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