Mount Suribachi (JPN.: 摺鉢山, Suribachiyama) is a 169 m high mountain at the southwest end of the island Iwo Jima (now officially Iō-tō) in the northwest Pacific Ocean, under the administration of Ogasawara Subprefecture, Tokyo Metropolis, Japan.

The mountain's name derives from its shape, resembling a suribachi or "grinding bowl." It is also known as the "Mount Pipe" (JPN: パイプ山, paipu-yama), since the sulfur gas and water vapor that rolls in from the summit, alongside the rest of the island, give the appearance of a smoking pipe when viewed from the sea.

Joe Rosenthal's famous photograph Raising the Flag on Iwo Jima was taken at the mountain's peak.

Geology

Geologically, the mountain is a cinder cone of andesite, formed by volcanic activity. It is thought that the mountain is a dormant vent to a still active volcano (designated Iō-tō, the name of the island as a whole). Most recently, the Japanese Meteorological Agency reported that on May 2, 2012, a small eruption caused water discoloration to the northeast, and confirmed the appearance of a new fumarole.

Mount Suribachi (69°29′S 39°38′E / 69.483°S 39.633°E / -69.483; 39.633, Jpn: 摺鉢山, Suribachiyama or Suribatiyama) is a conical hill in the south-central portion of Skarvsnes Foreland on the coast of Queen Maud Land. Mapped from surveys and air photos by the Japanese Antarctic Research Expedition (JARE), 1957-62. The name, meaning "conical mountain," was given by JARE Headquarters in 1973.

 This article incorporates public domain material from the United States Geological Survey document "Mount Suribachi" (content from the Geographic Names Information System).