A view of the Estero Americano estuary as it reaches the Pacific Ocean, as seen from the Wildlands Conservancy Estero Americano Coast Preserve. The estuary separates Sonoma and Marin counties.

A stretch of undeveloped California coastline on the border of Marin and Sonoma counties has officially opened to the public for the first time in a century. 

Set on the coast just south of Bodega Bay and west of Valley Ford, the Estero Americano Coast Preserve is a 547-acre expanse at the mouth of the Estero Americano estuary. The property is managed by the Wildlands Conservancy, a nonprofit in the San Bernardino Mountains. The conservancy acquired the preserve in 2015, according to its........

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