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1993 Map of Mark West Springs
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1993 Map of Mark West Springs

USGS Topo · Published 1993

About this map

The Petrified Forest stands as a focal point in this portion of Sonoma County, nestled within a landscape defined by volcanic geology and steep drainages. To the north, Knights Valley and the historic Mallacomes or Moristul y Plan de Agua Caliente land grant transition into the high ridges of Chalk Mtn and Bell Mtn. The map documents a rural infrastructure centered on the winding Petrified Forest Road and St Helena Road, where local life clustered around the Franz Valley School.

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Map Details

Date Portrayed1993
Date Published1993
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.8 x 26.7 inches

Editions of this 1993 Mark West Springs Map

Historical Maps of Santa Rosa Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain