Krakatau-Δ
Bring the sentence buried underground to the crater. Obsidian will not ask you to erupt; it lets the fissure glow, so the heated boundary can be seen before it breaks.
World Background
Real-world anchor
The Krakatau volcanic group in the Sunda Strait, between Java and Sumatra.
What happened
Underground pressure can become fissure, ash, lava, and new terrain.
What it became
Krakatau-Δ wakes at the crater, reading the boundaries that have begun to heat.
SEASONThe Fever Age
SIGNAL 001Pressure Valve