Mason-Dixon Post Mark'd West
historic site
Mason & Dixon traveled west then south from Philadelphia to establish the base point from which their survey began for the latitude for the PA-MD boundary. Mason referred to this marker in his journal as "the post mark'd west".
- Access
- Yes
- Inscription
- THIS POINT USED AS BASE POINT IN THE SURVEY OF MASON DIXON LINE 1763-1767
- 3.5 mi off the Mason and Dixon Byway
- 6.9 mi off the Red Clay Valley Scenic Byway
- 9.4 mi off the Brandywine Valley Scenic BywayNational
- 14.0 mi off the Chesapeake Country Scenic BywayNational
Overlooks nearby
- Hawk Point · 11 mi
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 07:07 | 18:40 | 19:15 |
| June solstice | 05:36 | 19:54 | 20:35 |
| September equinox | 06:51 | 18:26 | 19:02 |
| December solstice | 07:21 | 16:00 | 16:42 |
Local time (America/New_York).
39.72243, -75.73231
Elevation 67 m (modelled from terrain)