This CD consists of geothermal recordings of vibrations in the ground around the area of Krisuvik, Geysir and Myvatn in Iceland. The recordings have been carried out using accelerometers, vibration sensor microphones. These are stuck into the earth at various places around the geysers, mapping the sonic aspects of volcanic activity at the surface of the earth. A stick can be attached, to be inserted into - for example - the earth at desired places. Eldfjall was recorded during January and August 2004. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.