If you see the map from a few chapters back, you can see how there’s a dark cluttered mass in the lower right corner. Those would be (part of) the ruins.
A li’l warning: three people in this party are planning to go dragon hunting, so you can expect to see a dragon or two in this chapter. Not the cool scaly type, of course; the ugly colorful monstrosity that we’ve seen in the comic before. So yeah!