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 Photograph by D. Ferguson, Pierce County Office of Communication Services |
| Members of the Pierce County, Washington, Explorer Search & Rescue Unit clear a small area for one of 10 acoustic-flow monitors that can detect ground vibration caused by a passing lahar. The volunteers spent a weekend in July 1998 preparing sites for the monitors and learning about potential lahar hazards at Mount Rainier. |
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URL of this document:
http://volcanoes.usgs.gov/About/Highlights/RainierPilot/ExplorerDig_caption.html
Last modified: February 5, 1999