Gumroad – Terrain Brush Pack for Zbrush – 100 BrushesExtensive Brush pack for Terrain creation in Zbrush and other sculpting software.

Resolution of the brushes goes from 1k to 4kIncluded are:46 Mountain peak brushes19 Slope detail brushes35 Valley brushesThe Zbrush Brushes are already set up and ready to use but if you want to customize them or use them in another program you can download the alphas separately.