(W 80⁰15ʹ00ʺ--W 79⁰37ʹ30ʺ/N 35⁰45ʹ00ʺ--N 35⁰37ʹ30ʺ).
Relief shown by contours and spot heights.
"Modification to USGS base map by the Geometronics Service Center from 1981 aerial photography, 1973, 1976-1977 orthophotography, and 1985 correction guides furnished by the Southern Region."