Twin Peaks, along with Mount Davidson and
Mount Sutro, create a rugged landscape in the center of San Francisco which influences microclimates in the city. The mountain acts as a natural barrier against summer fog for the city's eastern neighborhoods. The North and South Twin Peaks, also known as "Eureka" and "Noe", are about apart. The peaks form a divide for the summer coastal fog pushed in from the
Pacific Ocean. Their west-facing slopes often get fog and strong winds, while the east-facing slopes receive more sun and warmth. Elevation at each summit is just over . Thin, sandy soil is commonplace on Twin Peaks, making them susceptible to erosion. On rare occasions, Twin Peaks has had a dusting of snow. On February 5, 1976, it received several inches of snow. ==History==