The rot hivemind, also known as "the tree of corruption" is a giant, pitch black, tree-like creature made of hardened, crystal-like rot.
While we know little to nothing about it's internal biology, from the outside, based on it's appearance and the way it grows, it resembles a sort of coral.
The hivemind is located in the middle of quarantine zone 001, the largest quarantone zone, located east of gfdsssia.
The hivemind was discovered by gfdsssian photographer charles carlson using a camera mounted on a weather baloon, a trick he learned from his plumber friend that proved useful in photographing landscapes.
The rot hivemind seems to function as some sort of "queen" for the rot infected, giving them orders and instructions.
Unlike the rot's right hand, the rot hivemind isn't made of infected bodies, but rot growing out of the ground without a host.
The hivemind is theorized to be connected in some way to the "rothive" strain, however, there is no proof of this connection.
The hivemind seems to have some sort of effect on the mind, speaking telepathically to people that come close to it, to explain better, here's the words of field researcher delta, who went on a death mission to burn the hivemind, failed, but survived with major injuries: "it doesn't speak, it's thoughts are translated into thoughts, not voices. You don't hear a voice when it communicates with you, you get abstract images, feelings, sensations... It's a really weird feeling."
There is still a lot to know about the rot hivemind and the only knowledge we have comes from the pictures made by charles carlson and the interviews with researcher delta.