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Geologist Kevin Pogue says variations in geology translate to differences in barrel tastes of wines. Those differences can be wiped out in the wine making process, however.

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Groundwork for wine laid in eons past

The Valley's geological history plays a role in the burgeoning industry, but just how much does the earth affect the flavor?

WALLA WALLA -- The Walla Walla Valley is renowned for its wine, but what about the area makes it particularly suitable for viticulture? According to geologist Kevin Pogue, the answer to that question lies buried just beneath our feet.

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