AMMO by MIG Enamel Heavy Mud – Enamel Mud for Modelling
Color: Heavy Earth

From the Manufacturer:

Dark Mud color textured enamel medium perfect for creating accumulations of textured high density mud and earth. Realistically create the final touches of variable textured earth to your model. Apply with a brush or tool, manipulate or remove with a clean brush moist with thinner. This effect can be used alone or with other enamel earth tones.