Stone Castle Dungeon.
The Ancient Castle Area has almost been completely covered by the Fungal Mat, and the Upper Area has spread significantly as well.
As for the Lower Area, although it is the area richest in magic power, with little time left, Lin Jun only set up a few observation points to study the entire process of the Underground City collapsing.
In the Middle Area, a secret chamber was excavated in a hidden corner by the Drilling Pukis.
This chamber can only be accessed through the Fungal Mycelium Network. Unless someone can dig through fifty meters of rock, it's impossible to find it.
The chamber is carpeted with Fungal Mat, but unlike others, these mats are light green.
A slender metal rod is inserted in the center of the chamber, a treasure Lin Jun "scavenged" from behind the gates in the ruins.
This unknown metal material, who knows how many years it has endured, aside from the dust, it hasn't suffered much damage, and it's heat-resistant!
