Purple mushrooms in the dark forest with a tree in the background

huge dark underground cave，Various purple mushrooms，There is a huge purple tree at the end of the cave，The roots spread all the way to the top，There is a huge object at the root of the tree，Creepy purple mushroom monster，There are various animal carcasses parasitized by mushrooms on the surrounding ground.......，Start standing up and walking slowly，terror，darkly，ogre，in a panoramic view，oppression，immensity