This is Korfu Island. The island of the first part of AC's Crossover Stories. That was the first time that I got ownership on the terrain creation. That was stressful at some points but in the end I'm proud of the result! It is 8km by 8km. The major challenge about this one was to fit a huge island in a small area like that to make playable in a video game. I had to buff it a little but the main shapes of the island is there.
About 3 weeks of work.