I went on a Minecraft binge the other weekend and spent all Saturday morning searching for a dungeon spawner (or something interesting) because honestly, I haven’t really found anything noteworthy in the game for quite some time. I was unable to find one through standard means so I started using the half-in sand/gravel x-ray vision cheat to scope out areas beneath me. No such luck. So then I generated two Cartograph maps: A normal render and a render displaying only mossy cobblestone (code 46 by the way). I overlayed the mossy image over the normal image in Photoshop and used that as a rough adventure map.
That map showed that there was a dungeon roughly between the island observation tower and the mountainside base. After searching for it for about an hour I gave up and resorted to running a standalone 3d visualizer to search for certain block types. It turns out that the dungeon was way deep and that I probably would never have found it unless I had dug a hole straight down to the baserock. I also found out that there was a dungeon literally 20 paces East of my spawn point. It was one block below the surface, go figure.
I played around with the portals more later that day. I wish that they were a bit more precise, I’ll explain: Portal A is located on the second floor of my base and leads to Point A within the Nexus. I had created another portal at Point B within the nexus, approximately 30 or so paces from Point A. Point B opens up to Portal B in the normal world. Every single top side portal that I have created leads to Point B, no matter how far out I am. I’ve tried destroying Portal B to see if that made a difference, but not so much. Portals C, D and E all link to Point B.
In the process of creating Portal C (or D), I had destroyed Portal B without bringing a compass. Instead of rebuilding and hopping back into the portal I wandered and got hopelessly lost, eventually burning down a large Forest and starting a small base in the middle of the destruction for the sake of mining enough obsidian to complete a portal that would lead me home (I didn’t want to die and lose my inventory). I turns out that the new base was located over a huge network of caves (seriously huge, I think I found Moria…). I mined enough iron to complete a lengthy cart track linking my spawn, the island tower and the mountain base. I want to link Portal C and the new base in the middle of burning forest but I ran out of iron. Here’s a video of it: