- Find the coordinate of the location using Google Earth
- Mark the places or Path
- Make sure, Latitude/Longitude should be in Universal Transverse Mercator (UTM)
- Save the location as a KML file and Remember Zone
- Open Global Mapper Software
- Open data file (Saved KML file)
- Select an online data Source as SRTM or ASTER and connect it
- Analysis Option > Generate Contours (using terrain grid)
- Enter the Contour interval and press OK


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