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  1. An ultra-prominent peak, or ultra for short, is a mountain summit with a topographic prominence of 1,500 metres (4,900 ft) or more; it is also called a P1500. The prominence of a peak is the minimum height of climb to the summit on any route from a higher peak, or from sea level if there is no higher peak.

  2. The (prominence) parent peak of peak A can be found by dividing the island or region in question into territories, by tracing the two hydrographic runoffs, one in each direction, downwards from the key col of every peak that is more prominent than peak A.

  3. Large numbers of ultras languish in relative obscurity; minor range highpoints in the American West or Central Asia, rocky peaks extending above the Antarctic icecap, isolated foothills in the Italian Alps, and unnamed summits in the B.C. Coast Ranges.

    Continent
    No. Of Peaks
    No. Of Peaks
    NORTH AMERICA:
    357
    SOUTH AMERICA:
    209
    EUROPE:
    107
    (includes Caucasus Nations)
    12
  4. The following sortable tables comprise the most topographically prominent mountain peaks of greater North America. Each of these 353 summits has at least 1500 meters (4921 feet) of topographic prominence.

  5. List of ultras of Oceania. This is a list of the 67 ultra-prominent summits (with topographic prominence greater than 1,500 metres (4,921 ft)) of Oceania, plus the two Ultras of the Southern Indian Ocean .