• www.science.ubc.ca/^~geol202/

good thin section photos of minerals - the microscope slides are made by cutting extremely thin sections of rocks and then shining light through the rock - the photo on the left is viewed in plain light, the one on the right is polarized light

• vulcan.wr.usgs.gov/Volcanoes/

most major volcanoes of the world are included

• www.geo.mtu.edu/volcanoes/

what is the texture of the lava flows in the opening photograph?

Soufriere Hills, Montserrat - video clip of pyroclastic flows in Tar River Valley on May 12 - this video should be mounted on many machines, just double click the Montserrat icon on the desktop. (the video takes about 15 minutes to download if you get it off of the web instead of using the desktop icon) (www.geo.mtu.edu/volcanoes/west.indies/soufriere/govt/images/051296/volcano_5fps.mov)

• volcano.und.edu/new_index.html

education page of volcanoes

• www.cenapred.unam.mx/^~jfg/mvolcan/fvolcan.html

great selection of Popocatepetl photographs

• paces.geo.utep.edu/~paces/elpjuarez.html

this is a satellite photo of the El Paso and Juarez area - you may click on parts of the photo for close-up views or choose from close-up options listed at the bottom of the page. Make sure that you look at the close-ups of the volcanic features: Aden crater and Kilbourne Hole.