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A hazardous, geologic event wherein a hyper-accelerating flow of highly concentrated, sulfur infused volcanic magma builds, cools and intermittently cracks, avulsing into jaggedly uniform, mobilzed 'slabs' of densely toxic rock formations. In rare and unique environmental conditions, migratory slabs have been observed to spontaneously combust into abounding flames upon impact with proximate flora, fauna and curious homosapien onlookers, resulting in a enveloping expulsion of sulfuric cinder chards and respiratory impairing, noxious fumes.
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