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To showcase Pakistan's terrain, you can use high-resolution global datasets:
: Explain how to isolate specific regions (like the Karakoram range) by using a shapefile polygon to "cut" the DEM to a specific extent.
: Provides 30m resolution global elevation data, highly reliable for regional mapping.
If your post is a tutorial, include these common GIS workflows:
How to create a DEM for an area and date without Google Earth?