Volcanism: page 1, page 2, page 3
Plug Dome Volcanos Layered Volcanic Materials
Fumeroles and Hot Springs #1 Fumeroles and Hot Springs #2
Fumeroles and Hot Springs #3 Composite Volcano
Details of Composite Volcano #1 Details of Composite Volcano #2
Volcanic Caldera
Details of pyroclastic deposits

Volcanism: page 1, page 2, page 3

Photography by Dr. Sharon Johnson
drsharonjohnson@comcast.net