Volcano Research Center - Part of the Earthquake Research Institute (ERI) of the University of Tokyo. Conducts various scientific researches on magmatic processes and volcano dynamics, which will help to improve prediction of volcanic eruptions.

Monitoring Volcanic Unrest at Long Valley Caldera, California - Real-time data on earthquakes, ground deformation, and volcanic gas.

Cascades Volcano Observatory - Information about and photos of the Cascades volcanoes, Mount Saint Helens updates, and volcano monitoring and hazards information.

Montserrat Volcano Observatory - Monitors erupting lava dome on the Island of Montserrat in the Caribbean.

Hawaiian Volcano Observatory - U.S. Geological Survey's comprehensive site about Hawiian Volcanoes.

Colima Volcano Observatory - Monitors an active volcano in Mexico that has erupted more than 40 times since 1576. Reports mainly in Spanish but some are translated into English.

Mt. Erebus Volcano Observatory - Photos and summary of studies on Antartica's Mt. Erebus, the world's southernmost volcano.

French Volcano Observatories - Observatories on Guadaloupe and Martinique Islands in the Caribbean Sea, and on the Comores and Reunion Islands in the Indian Ocean. Text in French.