page_title: Granite Domes of Yosemite National Park
section_title: Explanation of the concept of "clean prominence"
hierarchical_section_title: Granite Domes of Yosemite National Park / Explanation of the concept of "clean prominence"
caption_attribution_description: English: Half Dome as viewed from Glacier Point, Yosemite National Park, California, United States.
context_page_description: Many granite domes are in Yosemite National Park.
context_section_description: First a note about topographic prominence, which will lead to "clean prominence":
  In short: At a col, use the col's highest contour line, and pick the lowest contour line that can draw a closed contour about the dome.
  We start by computing the "clean prominence" of a dome. The vertical distance from
  the top of the dome to
  the lowest col from which a contour line  circles the top of the dome
  is the clean prominence. To calculate this, you need to know
  the elevation of the top of the dome and
  the elevation of the lowest col, from which a contour line encircles the top of the dome
  Here we use "clean prominence."
caption: The symbol of Yosemite: Half Dome. Everyone has heard of Half Dome. But Yosemite has many, many granite domes.
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