News

One of the fundamental premises of geology is that the "key to understanding the future is to understand the past."  In order to forecast how a...

Over the past two decades, the USGS Hawaiian Volcano Observatory (HVO) has set up a camera network system to monitor visual changes at Kīlauea and...

The USGS has recently published a "Campaign GPS measurements on the Island of Hawai‘i collected by the Hawaiian Volcano Observatory in 2019." This...

Annual GPS survey on Mauna Loa

HVO has updated the Geology & History webpages for Kīlauea and Mauna Loa volcanoes. These pages now include maps and links to revised tables...

Mauna Loa summit mission-critical fieldwork: MultiGAS installation

Many messages to AskHVO (askHVO@usgs.gov) request resources relating to geologic maps and geographic information systems (GIS) data. "Is there a map...

Mauna Loa summit shadow

Mauna Loa, the largest active volcano on Earth, has erupted, on average, every 5–6 years during the past 3,000 years.

In the past, HVO would occasionally post images of people collecting lava samples on our website. These photos usually featured a person (with little...