Diamond Craters

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 43.1°N
  • 118.75°W

  • 1435 m
    4707 ft

  • 322170
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Diamond Craters.

The Global Volcanism Program has no Weekly Reports available for Diamond Craters.

The Global Volcanism Program has no Bulletin Reports available for Diamond Craters.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
5610 BCE ± 470 years Unknown Confirmed 4 Radiocarbon (corrected)

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Photo Gallery


Diamond Craters in SE Oregon is a 60 sq km volcanic field consisting of basaltic lava flows and numerous cones and craters. The central vent complex in this photo formed as a result of explosive eruptions from as many as 20 craters and cones. The age of the latest volcanic activity is not known precisely, but could be as young as late Pleistocene or early Holocene.

Oregon Dept. Geology and Mineral Industries photo in Green and Short (1971).
See title for photo information.
Lava flows of West Dome, one the structural highpoints of Diamond Craters, rise NE of lake-filled Malheur Maar. The shallow 2-m-deep lake occupies one of many maars (the rest of which are dry) of the Diamond Craters volcanic field. Diamond Craters consists of a 60 sq km area of basaltic lava flows, cinder cones, and maars that form a unique geologic environment in the high desert country of SE Oregon. Initial eruptions of pahoehoe lava flows were followed by magma injection that produced six structural highs of up to 120 m.

Photo by Lee Siebert, 2002 (Smithsonian Institution).
See title for photo information.

Smithsonian Sample Collections Database


There are no samples for Diamond Craters in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites