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Mount Umunhum (Ohlone, meaning ''resting place of the hummingbird'')〔(【引用サイトリンク】 publisher = Midpeninsula Regional Open Space District )〕 is the fourth-highest peak in the Santa Cruz Mountains of California (after Loma Prieta, Crystal Peak, and Mt. Chual). The mountain is situated in Santa Clara County, southeast of Los Gatos and south of South San Jose. The peak is sometimes referred to as "Mount Um" by locals. It is a well-known landmark in the Bay Area which can be recognized in Santa Clara Valley by the five-story concrete, radar tower building, known locally as "The Cube" or "The Box", that sits atop the summit. The tower construction began in 1960 and completed in 1962. It supported an 85.5-ton General Electric model AN/FPS-24 long range search radar antenna "sail" used to detect incoming hostile aircraft during the Cold War. The summit of Mount Umunhum is the site of the former Almaden Air Force Station, an early-warning radar station built in 1957 that operated from 1958 to 1980. Most of the mountain is within the Sierra Azul Open Space Preserve, managed by the Midpeninsula Regional Open Space District (MROSD). The summit is closed to the public due to hazardous materials and unsafe partially demolished structures of the former Air Force station.〔(【引用サイトリンク】 Mt. Umunhum Notice of Area Closures )〕 Plans are underway to clean up and restore the summit for public use, with restoration or demolition of the landmark tower being considered.〔(【引用サイトリンク】 url = http://umunhumconservancy.org/ )〕〔(【引用サイトリンク】 publisher = Midpeninsula Regional Open Space District )〕 The mountain is also the site of the Bay Area NEXRAD weather radar.〔(【引用サイトリンク】 NOAA Agencies Partner with the Private Sector )〕 The high elevation is necessary for line of sight in the region's varied terrain, but it also limits the ability to detect storms with bases lower in the atmosphere. == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mount Umunhum」の詳細全文を読む スポンサード リンク
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