Lava Bomb, Basalt, Mt. Vesuvius, Naples, Italy
Lava Bomb, Basalt, Mt. Vesuvius, Naples, Italy
Glacial Striations I, Marquette, Marquette Co., Michigan
Glacial Striations II, Marquette, Marquette Co., Michigan
Chimney Rock, Volcanic Plug, Colorado
Lava Pillows, Negaunee Township, Marquette Co., Michigan
Folded Gneiss, M-95, Republic, Marquette Co., Michigan
Folded Gneiss, M-95, Republic, Marquette Co., Michigan
Folded Gneiss, M-95, Republic, Marquette Co., Michigan
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