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Basalt Cobblestone Quarries District
The
Basalt
Cobblestone
Quarries
District
, in
Clark County, Washington
near
Ridgefield
, is a
area
which was
listed
on the
National Register of Historic Places
in
1981
. It included
seven
contributing sites: seven
separate
quarries
.
It is located in the
Carty
Unit
of the
Ridgefield National Wildlife Refuge
.