How to fix blurry terrain detail

Does anyone know how to fix the this issue?

The terrain detail looks like this at the moment:

The actual picture of the detail looks like this:

The actual pictures dimensions is:

Any ideas? Help is much appreciated!
Thank you

In your texture import settings for that detail in the Assets window, change the wrap mode to “Clamp” and the filter mode to “Point”. If it’s still blurry, try changing the type to “Advanced” and change “Non Power of 2” to “None”.