Mt. Rogers (VA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by U.S. Geological Survey
Date flown 02/64
Line spacing 0.8 (km)
Altitude 1830 (m) by barometer measurement
Total distance 811 (km)
References
Counties Ashe - Johnson - Grayson - Smyth - Washington
Overlapping surveys

Data: Magnetic (M-Dz)