The San Andreas Fault cuts a distinct northwest-southeast path through the Santa Cruz Mountains, defining the geography of this mid-peninsula region. On the eastern slopes, the residential growth of Redwood City, San Carlos, and Woodside meets the edges of the Golden Gate National Recreation Area. The infrastructure of the San Francisco Peninsula is clearly visible through the Hetch Hetchy Aqueduct and the Pulgas Tunnel, which facilitate water transport across the heights. Higher elevations are marked by a dense network of trails such as the Sierra Morena Trail and Tafoni Trail, alongside significant peaks like Teague Hill and Bald Knob. The presence of Grabtown and Sky Londa reflects the more isolated mountain communities that stand in contrast to the developed corridors of the lower valleys.
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1892 · San Mateo
USGS Topo · 1:62,500
1896 · San Mateo
USGS Topo · 1:62,500
1897 · Palo Alto
USGS Topo · 1:62,500
1899 · Palo Alto
USGS Topo · 1:62,500
1899 · Haywards
USGS Topo · 1:62,500
1899 · San Mateo
USGS Topo · 1:62,500
1902 · Santa Cruz
USGS Topo · 1:125,000
1915 · San Mateo
USGS Topo · 1:62,500
1915 · Haywards
USGS Topo · 1:62,500
1939 · San Mateo
USGS Topo · 1:62,500