This nicely defined stones with deep mortar joints. Its molded in a dark gray on a flexible foam that will bend easily to go around curves. The only problem I have with it is the cut stone is very large. I had intended to use it for stone facing at the base of a wall, but its way too large for that in N scale. Might work in O/S and definitely in G. It would work great for retaining walls in N. See picture. Package contains 2 large 14 X 5 foam sheets that are about 1/8 thick.