Here is "forgotten Land IV", probably the last.

It's the closest to my initial idea.

As is often the case, there are imperfections with the waterfalls.

Trigger words: Forgotten land, fantasy scenery, cliff, water, waterfall, (floating), (ruins)

Useful prompts: (floating island), (mountainous horizon)

Negative prompts: text, trademark, copyright, signature, logo

Strength: 0.7 -> 1 (0.8 is enough)

https://pixai.art/fr/model/1975765724216419251