Mason-Dixon Line Western Crossings

Brown's Hill where Mason and Dixon's survey was halted

In October, 1767, Mason and Dixon were told by their Native American companions they could go "not one step farther" westward. On top of a steep hill (trust me, I've been there!), the stone monument set by Cephas Sinclair in 1883 marks where Mason and Dixon's survey (but not their line) ended. The site is just to the south-southwest of Mount Morris, Pa., along Buckeye Road.

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The last crossings (near Ned, Pa.)
Near the real end of The Line
From Ned to U.S. 19 and I-79
Near Mount Morris, Pa., and Morgantown
Brown's Hill
(Mason and Dixon's westernmost site)
The Dunkard Creek crossings
(where Mason and Dixon were stopped)
From U.S. 19 and I-79 eastward
To Chestnut Ridge
Lake Lynn Dam
It forms Cheat Lake
West of The Line
If it was extended west to the Ohio River
Easternmost Western Crossings
Random crossings east of Chestnut Ridge
The Tripoint
Where W.Va., Md. and Pa. meet
The Transpeninsular Line
Delaware's southern border
Delaware's southwest corner
Another end of The Line
Mason-Dixon markers I've visited
Some are out of the way
Coming soon

Coming soon

To come: The Ellicott Line
Along Pa.'s western border
Back to the main page
The starting point
Highways that cross The Line
State and U.S. roads, Interstates
Links page
See what else is out there