""The bench mark is a disk set in the concrete base of an abandoned mail box at the intersection of Biological Station Drive and Ferry Road, 6.71 m (22.0 ft) south of the centerline of Ferry Road, 4.88 m (16 ft) east of the centerline of Biological Station Drive, 0.43 m (1.4 ft) NW of a 0.52 m (1.7 ft) diameter cast iron pipe set vertically in a concrete base."(NOAA)"
15/11/2011 |
NOAA |
4 |