![]() ![]() It features tunnels that connect the two gunpits, magazines, and storage rooms. Built into the highest point at the Golden Gate, Battery 129 had two large guns mounted under thick concrete shields covered with native vegetation for camouflage and virtually invisible from above. ![]() Unlike most of the World War II fortifications built in the park to defend against battleships, Battery 129-now known as Hawk Hill-was build to defend against attacks from the air. In the last decade the park has undertaken a number of grassland restoration projects at Hawk Hill and other sites throughout the Golden Gate National Parks to help promote the mission blue’s survival. Mission blue numbers took a plummet in the mid-90s when, after decades of habitat loss due to development and invasive species, a fungal pathogen attacked their host plants (lupines). One of the first invertebrates to be protected under the Endangered Species Act, this quarter-sized butterfly is an important resident of area grasslands. Visit the Golden Gate Raptor Observatory to learn more.Īlthough Hawk Hill is primarily known for migrating raptors, it is the much smaller Mission blue butterfly that keeps restoration ecologists coming back to the site. Others, such as juvenile Red-Tailed Hawks, may be “dispersing” in search of new territories. Many are migrating from their northern summer breeding grounds to their more southern overwintering spots. As many as 19 different species of raptors may be seen from Hawk Hill in the fall.
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