You can find a tutorial - first steps at: https://youtu.be/33Xt1ZQPsdM

Its very easy to use, just append it to the scene and change the path of the curve.. The terrain will addapt to it.

You can find older version in the download section. For the latest DONWLOAD: "V2.00 LATEST VERSION - Unimog"

**For Eevee users: be advised that is a very complex model with very complex materials. The shader cache time can be long and the fps can drops significant (depends on hardware)... if you need it you can simplify option (to reduce poly count) AND enter in the VFX node group in ANY material and conect the input to the output.. this will disable the VFX´s in the materials, but will increase the overall performance**

Hope you like it!