AK Interactive - ​​​​Wet Crackle Effects (#AK-8034) is a specialized, non-toxic acrylic paste engineered to replicate wet, dark, and freshly cracked soil. 
Formulated to achieve an accurate, scale-correct finish, it shrinks as it evaporates to leave behind a network of organic fractures. 
It is ideal for adding complex environmental weathering to the lower hulls, wheel wells, and mudguards of military vehicles, as well as swampy or drying riverbed diorama bases.