Venom Woods

Venom Woods (also named as Mystical Forest during the old time) is a forest-themed region of the Eleanor Kingdom in Super Mario Bros. X: Alternate Kingdom. It is inhabited by frogs, living plants, crocodiles and monkeys. It was also the home of a Yoshi Tribe and a Shy Guy Tribe, except the Yoshis aren't mainly found here because of the unnatural flood of Venom Woods, which is revealed to be the main the source of Isla de Yoshi's murky waters and its unusual weather. It is known that species residing in the Venom Woods, despite suffering, are used to the Venom Woods's poison and became more wilder. Except a few species, the Snapjaws, the frogs, and Piranha Plants (especially the Hootie the Blue Fishes) are uneffected by its poison. It is the fourth world Mario and friends goes to where they can investigate the unusual disasters of the Venom Woods.

Before the events of Alternate Kingdom, the Venom Woods was mainly inhabited by humans, Shy Guys and Yoshis, where there existed a tribe. Not all of the woods had poisonous water, but also contained life-giving and pure forest water which all inhabitants use to drink. The forest waters are the source of Venom Woods keeping most plants and animals healthy and more alive. If the toxic water begins to creater another disaster, the Venom Tribe would use the magical Ice Flower to freeze the water.

By the time Blaize invaded the kingdom, the toxic water of the Venom Woods began to flood, therefore poisoning many inhabitants and plants of the woods and the Yoshi Tribe had disappeared from the Woods. Eventually, even though hating it, the wild animals and plants are now used to the Venom Woods' toxic water, becoming unusually stronger and wilder.

However, rumors had said that Doshi was responsible for fighting most of the effected enemies, brought them to an old forbidden stronghold once builded by the Venom Tribe and locked the door. It's confirmed that Doshi will briefly be encountered agan.

Trivia

 * The Venom Woods is similar to that of Woodfall from Majora's Mask and other forest-themed locations of the Zelda series. Howver, unlike them, it's confirmed that the Venom Woods has cold environments as well.
 * The world will also be like the forest / jungle worlds of the Mario and Donkey Kong series.
 * The Venom Woods is confirmed to be among the worlds to have a sad and dark story.