Hi @Eran_Shaysh,
Cesium for Unreal doesn’t currently support 2D maps, so I’m afraid it’s not possible to “flatten” the map. However, Cesium World Terrain comes with a “water mask” that applies a water material to any parts of the terrain that correspond to water. Like this:
So I just want to get on the same page as you — is this what you mean? Or are you trying to have an actual, realistic water body with depth?
In the latter case, this thread seems similar and may help to partially answer your question. Let us know!
