Arid Dry Ground (or Mud) texture from Ammo/MiG is a newer edition to their line of Vignettes Acrylics. This product is designed for small and medium sized dioramas or vignettes and comes ready to use in a 100ml tub. This particular product has a coarser texture than some of the other textural products ( I.E. concrete) in AMMO/MiG's catalog.
Borrowing from Ammo's own description: The application method is remarkably simple. You can use any kind of tool at hand and the Arid Dry Ground Texture can be mixed with other weathering materials such as pigments or acrylic paints to create a full range of authentic earthen effects. It can be used for any scale ranging from 1/16 to 1/72. Using this product, you can obtain a perfect finish in your scenes, virtually mimicking real soil. The new format has been optimized for working on scenes and dioramas, so that the product always remains in perfect conditions for each use.