1)
As the tunnels gnawed from bedrock by rock-eating purple worm equivalents that inhabit the Great Below (the depths beneath the Lowerdark) are considered by sages to become part of the Underdark once they exist, the answer is:
Increasingly hot and soft bedrock...
#realmslore
May 18, 2026 · 10:27 PM UTC
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2)
...that shifts constantly as it’s split by magma flows, as molten rock seethes and bubbles like so many competing cauldrons, their meltings and reconstitutions giving off noxious gases that tend to explode under the right conditions, causing “rockbursts.” ...
#realmslore
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1,133
3)
As one goes deeper, the rock becomes increasingly softer, becoming a sludge like softening ice cream, until a vast molten core is reached at the center of it all.
#realmslore
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1,028
