Neither occurs naturally in south Florida and the two closest sources of basalt, a volcanic rock, are the Appalachian mountains of eastern North America or the the highlands of Guatemala, site of Maya settlements.
(Neither; occurs naturally; L:in south Florida) (the two closest sources of basalt, a volcanic rock; are; the Appalachian mountains of eastern North America or the the highlands of Guatemala)
Neither the two closest sources of basalt, a volcanic rock
occurs naturally are
L:in south Florida
the Appalachian mountains of eastern North America or the the highlands of Guatemala