Create DEM & Contour from Google Earth in ArcGIS
DEMs are used often in Geographic Information Systems (GIS) and are the most common basis for digitally-produced relief maps as well as surface modeling.
Open Google Earth.
Google Earth is open to select any area or search for any particular region (choose Hill Area).
Now Add Path and create polyline or path Data. Write the File Name (path) and click OK.
The next step is to save your data. Right-click Path and select save place as. Choose Data Format KML.
In the next part, KML Data convert to GPX Data to help from GPX Visualizer site.
Open GPS Visualizer Elevation, Browse KML File (path.klm), then convert & add elevation Output select GPX file.
Finally, open ArcGIS Software and add the GPX Data to Feature.
GPX to Features window appears, select Input GPX File (path.gpx) and also Output Feature Class then click OK button.
Now add GPX Feature Data (path_feature) in ArcMap.
Create a DEM open IDW Tool.
In the search box, search IDW. or you can also manually open this Tool. Open ArcTollbox, in the Spatial Analyst Tools group Select Interpolation subgroup and Open IDW Tool.
IDW Tool window appears, select Input point features (path_feature). The most Important Z value filed select Elevation, and choose output raster Destination. Finally, click the OK button.
Add IDW in Table of Contents, and show the DEM result.
Right-click IDW, select Properties. Layer Properties window appears in the Symbology group, Choose Stretched and click OK.
Now you can easily Create a Contour Map to use this DEM Data.
Create TIN (Triangulated Irregular Network) to proper 3D view.