Columnar Jointing

Connected Sites: 6

A system of fractures that splits a rock body into long prisms, or columns. It is characteristic of lava flows and shallow intrusive igneous flows.

Connected Sites

  • Jeju
    Jeju
    Republic of Korea
    Inscribed: 2007
    3.52
    117
    10
    Examples in the Hallasan Natural Reserve (AB review - " The diverse volcanic landscape includes a 1.6 ha lake-filled crater, 550 m in diameter and 108 m deep, a younger (circa 25,000 years in age) intruded trachyte dome, and a series of columnar jointed basalts forming prominent cliffs" (the Best examples on the island are at Jistagae Rock but this is not within the inscribed area)
  • Yellowstone
    Yellowstone
    United States of America
    Inscribed: 1978
    4.49
    214
    12
    Sheepeater cliff (and others)
    See volcanoes.usgs.gov
  • Vatnajökull National Park
    Vatnajökull National Park
    Iceland
    Inscribed: 2019
    4.07
    183
    7
    Svartifoss
  • Nan Madol
    Nan Madol
    Micronesia
    Inscribed: 2016
    3.53
    14
    7
    Nan Madol was built using columnar basalt quarried from various locations on the island of Pohnpei (wiki)
  • Gulf of Porto
    Gulf of Porto
    France
    Inscribed: 1983
    3.23
    60
    4
    Scandola Nature Reserve
    See en.wikipedia.org
  • Giant's Causeway
    Giant's Causeway
    United Kingdom
    Inscribed: 1986
    3.64
    247
    12