Overview

Kīlauea is an active volcano on the Island of Hawaiʻi in the Hawaiian Islands. It is classified as a shield volcano, a broad, gently sloping form built by repeated outpourings of low-viscosity lava. The volcano sits on the southeastern flank of the island and is closely associated with neighboring volcanoes such as Mauna Loa and Kohala, forming part of the island's volcanic complex.

Structure and lava characteristics

Kīlauea produces basaltic lava that flows readily as pāhoehoe or more rubbly ʻaʻā types. Its summit contains a caldera with vents such as the historic Halemaʻumaʻu crater and the long-lived Puʻuʻōʻō vent on the east rift. The volcano has well-developed rift zones that direct magma outward from a central magma system supplied by a deep mantle hotspot. This plumbing system allows frequent eruptions and the occasional formation of a lava lake.

History and notable eruptions

Geologically Kīlauea is relatively young compared with other Hawaiian volcanoes; much of its surface is tens of thousands of years old. Recorded observations begin in the early 19th century, with one of the earliest written accounts in 1823. A major, long-lived eruption began at Puʻuʻōʻō in 1983 and continued intermittently for decades, reshaping the landscape until major changes occurred during events in 2018 that produced widespread lava flows and caldera collapse. Smaller eruptions and vigorous activity have continued intermittently since then.

Hazards, impacts and human response

  • Lava flows: can destroy structures, roads and vegetation.
  • Volcanic gases: sulfur dioxide and volcanic smog (vog) affect air quality and health.
  • Seismicity and deformation: earthquakes and ground change often accompany eruptions.

Significant damage to homes and infrastructure occurred during the 2018 events; communities were evacuated and scientists intensified monitoring. Emergency planning, land-use policy and building codes on the island reflect the persistent volcanic risk.

Cultural and scientific importance

Kīlauea holds deep cultural significance in Hawaiian tradition and is linked with the Pele deity in oral history. At the same time it is an important site for volcanology: researchers study its eruptions, gas emissions and ground deformation to understand basaltic systems worldwide. Visitors can observe volcanic features in safe, managed settings, contributing to education and local economies.

Further resources and distinctions

For background on volcano types and hotspot geology see general references about hotspots and the broader volcanic chain. Specific topics include summit craters, rift-zone dynamics, and the 1983–2018 Puʻuʻōʻō activity. Historical records and monitoring summaries are maintained by geologic and emergency agencies; for more information consult agency pages and scientific summaries (volcano overview, physical measurements, lava properties, lava lakes, 2018 eruption reports). Additional reading and maps are available through educational portals and institutional archives (regional context, structure, neighboring volcanoes, geologic origin).

Because volcanic activity changes over time, consult current monitoring networks for the latest status before planning visits or evaluating hazards.