Here is a concept I did for the camp area where you encounter the water dragon fight. I was also tasked to design the train which take you to the upper level of the mountain. These are super fun to worked on and thanks to Luke Berlinner for the air direction. The train design is inspired by some of the early sketches by Abe Taraky.
https://www.artstation.com/lukeberliner
https://www.artstation.com/abe-taraky