I used a map under Wordlcreator to create an open world from a 4k Heightmap map, I then integrated under Unreal Engine 5, I created a simple landscape material with 3 different quixel materials (rock, snow, moss) .. from the slape map of wordcreator I was able to recreate the topography levels according to the different materials, I then painted certain areas, and in procedural system made the vegetation grow... I added a small lake and set the waves and the tint /// :)