Earth's innermost layer, solid iron-nickel alloy.
GeologyEarth ScienceCore
Current best complexity is 6:
Inner Core can be discovered in Concepts, categorized under Geology, Earth Science, Core. Earth's innermost layer, solid iron-nickel alloy.
It has been discovered by 7 boards and crafted 10 times, first appearing 2 months ago. Inner Core can be created from 3 recipes, and goes on to appear as an ingredient in 12 others.
Inner Core was first discovered by Jittery's board 2 months ago. They also hold the lowest-complexity recipe, at 6.
Related concepts worth exploring include Volcano, Lava, Geyser, Eruption, Magma, Obsidian, and 6 more.