Compared to other regions, the Western Region probably has the richest nature and most diverse ecology.
This place is filled with rainforests, jungles, swamps, lakes, rivers, cave networks, mountains, and so on. The sheer richness of nature here even made High Marshal Anthony a little hesitant and difficult to build human societies due to his fear of ruining this place.
But what has to be done must be done. Besides, all it needed was very careful planning and consideration to complete his task. They have time to spare now, so this wasn't a problem.
The richness of nature's bounty here provoked the interest of many scientists and superhumans who have a deeper connection with nature. All sorts of flora and fauna grew here, and the diversity of fierce beasts local to this region was rich too.