A Geophysical Survey of the Tunnel to the Crater
Year: 2005
Summary
A radar appears to have detected voids above the tunnel where it has collapsed. Survey for Jerry Helton (NPS),
Cite this Record
A Geophysical Survey of the Tunnel to the Crater. 2005 ( tDAR id: 381207) ; doi:10.6067/XCV80K288S
Keywords
Culture
Historic
Investigation Types
Geophysical Survey
Geographic Keywords
Petersburg, VA
Spatial Coverage
min long: -77.396; min lat: 37.206 ; max long: -77.372; max lat: 37.238 ;
File Information
| Name | Size | Creation Date | Date Uploaded | Access | |
|---|---|---|---|---|---|
| tunnel.pdf | 8.31mb | Jan 26, 2013 2:06:06 PM | Public |