The 2022 eruption of the Mauna Loa volcano cut off road access to the Mauna Loa Baseline Observatory. Construction on the temporary Mauna Loa Access road was completed on 26 March, 2026.
At this time, there is no site access for the general public to the Mauna Loa Observatory and NOAA has not yet established a public opening date. GML and scientific partners are working together to bring mission critical scientific projects back online. It is still unclear when utility infrastructure will be replaced and power re-established to the site.
We will provide another update as more information becomes available.
Media contact: Theo Stein at (303) 819-7409 or theo.stein@noaa.gov.
Directions and Maps to MLO
(Click the graphics below to generate interactive google maps and street-by-street directions to MLO)
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Directions to Hilo office from airport.
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Directions to Cape Kumukahi from Hilo office
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Direction to Kulani Mauka from Hilo office
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Map of MLO access road
(click here to download a document with points of interest on the access road!)
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Map of observatory facility (click to see larger view)
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The appearance of external links on this World Wide Web site does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration/Mauna Loa of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA/MLO does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.