Wet Ground texture is the perfect texture and colour for recreating any wet soil or dirt natural surface. Allow 24 hours to completely dry; prior to drying, wheel, track marks, or whatever you wish can be pressed into the surface. Acrylic product for textures in dioramas. Perfect results in thin or thick layers. It can be diluted with water or an acrylic thinner to improve its flow.
Further info about the full diorama range by AK Interactive can be find here