Assertion: volcano's magma | /r/CapableOf | harden within the conduits of the volcano
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Source sentences:
text: Once eruptions ceased, the ongoing forces of glacial erosion, as well as hydrothermal alteration of the volcano's interior, stripped away layers of volcanic ash deposits and lava flows, uncovering the rocky lava spines where magma had cooled and hardened within the conduits of the volcano.