Photoshop (I am unsure if or GIMP can save in the correct format so a Photoshop trial off their website is good enough for now if you do not have it, I'm using 'White Rabbit'. This may work in the original Spintires but I have not tested that yet. In this tutorial we are going to cover how to import real terrain height data, and convert that into a format that the Mudrunner Editor understands.