Benefiel's House, On the 'Net (14: 48, October 23): Approximately, how long does it take for lava to cool into igneous rock?
(Benefiel's House, On the 'Net (14: 48, October 23): Approximately, how long does it take for lava; to cool; L:into igneous rock)
Benefiel's House, On the 'Net (14: 48, October 23): Approximately, how long does it take for lava
to cool
L:into igneous rock