Burning Rock

Boulder of Lava
Boulder of Lava
Item# V0012
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Product Description

Accretionary lava ball comes to rest on the grass after rolling off the top of an aa flow in Royal Gardens subdivision. Accretionary lava balls form as viscous lava is molded around a core of already solidified lava (photo by J.D. Griggs, 7/2/83, JG2562)