Stuck In Small Closed-off Realm

I was just farming random realms and spawned in a very small, closed-off Arachnid’s Nest realm where there were a ton of items and enemies. It was a blast and I felt like I found a secret realm or something.

But when I cleared everything, I realized I could not complete the quest of activating shrines because none spawned in that confined realm! I just saved and restarted. But thought I’d mention it here. It reminded me of those portals that take you to a room of just treasure or relics.