Best attractions and places to see around Clarysville include historical landmarks and significant trailheads. This region is situated near the historic Mason-Dixon Line and serves as a gateway to major long-distance trails. Visitors can explore a landscape shaped by both natural features and human engineering, offering a variety of outdoor experiences. The area provides access to important sections of the Great Allegheny Passage and the C&O Canal Towpath.
Last updated: November 2, 2026
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The Knobley Tunnel Trail, also known as the Carpendale Trail, is a short but scenic rail-trail spanning only 0.8 miles. Bikers can check out the 1,500-foot tunnel through Knobley Mountain and a 386-foot wooden bridge over the North Branch of the Potomac River. The Knobley Tunnel Trail connects directly to the C&O Canal Towpath near mile marker 183, and is not always open, so check for posted signage.
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The Mason-Dixon Line Monument marks the historic boundary between the states of Maryland and Pennsylvania. Today, it is a scenic rest stop for hikers, featuring a granite obelisk, engraved blocks spelling "Mason & Dixon," and a replica of the surveyors' 66-foot chain. It is a great photo opportunity and Easily a must-see for history buffs.
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Helmstetter’s Curve is one of the most notable sections of the GAP. Located between Cumberland and Frostburg, the curve was built to help ease the gradients for trains trying to get up the steep slope. Now, it is a popular spot along the GAP for the great views it gives you as you gradually ascend the hills.
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The GAP does not pass through the center of Frostburg, but that does not stop the town from being a popular stop for cyclists on the trail. It's a short ride from the trail head into the historic town, which started as a stagecoach stop and was a major coal mining hub. Now, the town is full of restaurants, culture, and accommodation. At the trailhead, there are restrooms and water available, as well as parking.
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This marker stands on the Mason-Dixon Line. Originally part of the border between Maryland and Pennsylvania and a dividing line between the slave states to the south and the anti-slavery states to the north, this line is still widely acknowledged as a roughly accurate boundary between the northern and southern portions of the United States.
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The region is rich in history. You can visit the Mason-Dixon Line Monument, which marks the historic boundary between Maryland and Pennsylvania and served as a significant dividing line in US history. Additionally, the Frostburg Trailhead provides access to the historic town of Frostburg, which began as a stagecoach stop and was a major coal mining hub.
Yes, several attractions are suitable for families. The Mason-Dixon Line Monument is a scenic rest stop and photo opportunity. The Great Allegheny Passage KM 0 and C&O Canal Towpath Northern Terminus offers mostly flat and easy sections for cycling or walking, and Helmstetter’s Curve provides great views along the trail.
The Mason-Dixon Line Monument is listed as wheelchair accessible, offering an opportunity for all visitors to experience this historic landmark.
The area is ideal for cycling and walking. You can explore sections of the Great Allegheny Passage (GAP) and the C&O Canal Towpath. There are numerous cycling routes available, such as the 'Brush Tunnel – Frostburg Trailhead loop' or 'Frostburg Trailhead loop from Georges Creek'. You can find more details on these routes in the Cycling around Clarysville guide.
The official start of the Great Allegheny Passage (GAP) is at Great Allegheny Passage KM 0 and C&O Canal Towpath Northern Terminus in downtown Cumberland. Another popular access point is the Frostburg Trailhead, which provides facilities and a short ride into the historic town of Frostburg.
Yes, the Great Allegheny Passage KM 0 and C&O Canal Towpath Northern Terminus offers mostly flat and easy sections, making it suitable for beginners and families. The Knobley Tunnel Trail is a short 0.8-mile rail-trail that connects to the C&O Canal Towpath.
Absolutely. Helmstetter’s Curve along the Great Allegheny Passage offers excellent views as the trail gradually ascends. The Mason-Dixon Line Monument also serves as a scenic rest stop.
The Knobley Tunnel Trail is a unique short rail-trail featuring a 1,500-foot tunnel through Knobley Mountain and a 386-foot wooden bridge over the North Branch of the Potomac River. Be sure to check for posted signage regarding its opening status.
Yes, parking is available at key locations. The Great Allegheny Passage KM 0 and C&O Canal Towpath Northern Terminus in Cumberland offers ample parking. The Frostburg Trailhead also provides parking facilities.
At the Frostburg Trailhead, you'll find restrooms and water. The Great Allegheny Passage KM 0 and C&O Canal Towpath Northern Terminus in Cumberland is well-connected, offering Wi-Fi connectivity, food resupply options, and lodging/camping nearby.
Visitors appreciate the blend of history and outdoor activities. The historic boundary marker at the Mason-Dixon Line Monument is a popular photo opportunity. The ease of access to the Great Allegheny Passage and C&O Canal Towpath, with their scenic views and family-friendly sections, is also highly valued.


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