D-day is a World War 2 total conversion mod for Red Alert 2, featuring thirteen different countries equipped with over a thousand new units spread across multiple game modes.
Here is a new set of urban cliffs with 4, 3, 2 & 1 hight pieces. The ones seen here have grass on the bottom edge, included in the set are also pave, sand & water variants, as well as hundreds of ramp & joints pieces that can link them all together.
Also show in the the screen shot is a modular railing system that allows me to use different types of railings/walls along the edges of the cliffs.