You can model the terrain in an external package and use tiled textures with vertex painted masks in unity. But I would use the internal landscape tools. I guess its better then importing one large landscale mesh. You only need some tileable textures and it looks like you have some ;) . Because this is a flight simulator I…
Something to stop checking news. For a single weekend only. Something a bit sad and lonely with a smell of landscape like LeGuin's "Planet of exile" or something weird and oddly intriguing like "Amatka" by Karin Tidbeck. Any suggestions?