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?