How to extract geological faults in a DEM image?

Hello. I have got a DEM image, I want to extract the faults. How can I do this?


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We will need a lot more information than that in order to help you get started. We are here to help you with specific coding questions so you should provide us with some data and code we can work with in the form of a reprex. A reprex consists of the minimal code and data needed to recreate the issue/question you're having. You can find instructions how to build and share one here:

Good luck

Thank you for the help. I am new in this software, I will study and create/find a code to extract the geological faults. A friend had told me to make a hillshade on the image and after that I would be able to see the geological faults, but I can't find the code to make the hillshade on the image.

I googled "CRAN hillshade"
and I got this :
hillshader README (

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