This is a Proceduraly generated snowy Mountain. It curently uses Remingtion Graphics PBR Material-Creator 2.1, but I will update it to the Principled Shader when 2.79 officialy releases. It uses adaptive Subsurf for the Displacement, and parts of Snow-Material by "blendr". Everything is made out of Noise- (and one Gradient-) textures.
Feel free to tweak all the Values to get the result you want!