So I made a portal, went through and landed on a tiny little island in a lake of lava. I made another portal one block away from the first, and came out in a... cave. No entrance or exit at all, nothing I've seen before. I went back through both portals several time, and always came out in the cave. Since I had nothing with me but 7 obsidian and a flint tool, I killed myself and respawned at my regular place. I want to mine that helstone stuff, so how do I get the portals to work right?
Portal orientation in my "earth" world:
In then "Nether" world:
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(left - entry portal, right - portal made in nether by me)
Portal orientation in my "earth" world:
In then "Nether" world:
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(left - entry portal, right - portal made in nether by me)