There is hi quality project of mountain includs OBJ with 16 UDIMs.

1) Rock Color 16x8K 8bit 2) Rock Specular 16x8K 8bit 3) Displacement map 16x8K 32bit 4) Snow Color 16x8K 8bit 5) Snow Specular 16x8K 8bit 6) Snow mask 16x8K 8bit

Also, there are included basic zBrush project with 6 levels of subdivision and basic planar displacement map (16K 32bit)