Battery Townsley, Military bunker in Marin Headlands, US.
Description
Battery Townsley is an underground military complex in the Marin Headlands built with 26 interconnected rooms and reinforced concrete construction. The structure was designed to house and protect heavy gun installations along the coast.
History
The facility was built between 1938 and 1940 as a defensive coastal position during the Second World War era. It later shifted to scientific research purposes in the 1960s.
Culture
The structure represents mid-20th century coastal fortification engineering and serves as an educational center for military defense history.
Practical
You can reach the site by hiking a steep trail from the Fort Cronkhite parking area nearby. The location offers guided visits at set times to explore the underground spaces safely.
Did you know?
In the 1960s and 1970s, the facility served as a testing ground for experiments simulating nuclear blast pressure waves. This research work transformed the former gun installation into a scientific research site.
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