The wall keeping the Tainted Northeast section apart from the rest of the zone. Bound by marble, Pure Nodes, and Warding Stones, this wall has kept the Taint Swarms at bay ever since a set of unfortunate experiments rendered the area uninhabitable. Just remember to always designate a "Dangerous Experiment" area of your base, for when they inevitably go wrong. And don't forget, just because your client hasn't updated to show you The Change yet, doesn't mean it isn't there. Relog is your friend...
