In this project DEM output DTM type and single mosaic were selected, and the DTM file name dtm6768.img, the
cell size of 10 meters in both x and y axis with the pixel made square in size, the DTM border was trimmed by 10% and finally contour line with an interval of 5.00 meters was generated. The DTM and generated contours are shown in figure 1.7 below.