
Mason-Dixon Tri-State Marker
Stand where history was surveyed! Visit the Mason-Dixon Tri-State Marker, a stone monument on the historic boundary line.
Highlights
Must-see attractions
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From TikTok & Reddit
Best Time
Pleasant weather for hiking.

Mason-Dixon Tri-State Marker
Best Time
Pleasant weather for hiking.
Highlights
Must-see attractions
Stand where history was surveyed! Visit the Mason-Dixon Tri-State Marker, a stone monument on the historic boundary line.
"Great history and nice trails, just follow the park signs carefully to find the marker!"

🎯 Follow Trail Signs Carefully
Google Maps can lead you astray. Look for numbered hunting spot signs (22 & 23) for guidance on trails.
🚗 Park at Possum Hill Lot
Start your journey from the Possum Hill parking lot in White Clay Creek State Park.

Highlights
Discover the most iconic attractions and experiences

Post Mark'd West Monument
White Clay Creek State Park
A historic stone monument marking the original Mason-Dixon Line post. A must-see for history buffs!

Bryan's Field Trail System
White Clay Creek State Park
Explore up to 10 miles of scenic trails, perfect for a longer hike or a nature escape.
Plans like a pro.
Thinks like you
Planning Your Visit
Navigating to the Marker
Park Entry & Trails
Best Times
Insider Tips
from TikTok, Instagram & Reddit
🎯 Follow Trail Signs Carefully
Google Maps can lead you astray. Look for numbered hunting spot signs (22 & 23) for guidance on trails.
🚗 Park at Possum Hill Lot
Start your journey from the Possum Hill parking lot in White Clay Creek State Park.
💰 Consider a Park Pass
If you plan multiple visits, a $30 annual pass is cost-effective.
👟 Wear Comfortable Shoes
The hike to the marker is short, but exploring the trails requires good footwear. :athletic_shoe:
Tips
from all over the internet
🎯 Follow Trail Signs Carefully
Google Maps can lead you astray. Look for numbered hunting spot signs (22 & 23) for guidance on trails.
🚗 Park at Possum Hill Lot
Start your journey from the Possum Hill parking lot in White Clay Creek State Park.
💰 Consider a Park Pass
If you plan multiple visits, a $30 annual pass is cost-effective.
👟 Wear Comfortable Shoes
The hike to the marker is short, but exploring the trails requires good footwear. :athletic_shoe:
What Travellers Say
Reviews Summary
Visitors praise the historical significance of the Mason-Dixon Tri-State Marker and the surrounding trails in White Clay Creek State Park. The park offers a good hiking experience with options for longer explorations. However, some find navigation to the marker can be tricky if not following specific advice.
"This place is great. Bryan's field trail leads into a bunch of nice trails and you can get a good 10 miles in if you take all the perimeter options. It's a state park so you can get a year pass for $30, or pay $4/day for in state, and $8/day for out of state."
Brandon Tóth
"Needed to check Post Mark'd West off of my Mason Dixon bucket list. Dont follow Google directions if driving. You need to go to possum point parking lot THEN use Google directions or just follow the trail signs. Google wants you to randomly walk through the woods instead of the trails. Maybe it's the time of year but where you need to turn right off of Bryan's trail you can barely tell its a trail. Look for the number signs (22 and 23) that are for hunting spots if you aren't sure if you should go straight or turn."
Hilary Ennis
"The "Post Mark'd West" is a stone monument installed in 1953 to mark the original location of a wooden post erected by Jeremiah Dixon and Charles Mason along the latitudinal line of the Pennsylvania- Maryland border. The Mason-Dixon Line begins just over two miles to the west.
This stone marker can be accessed via a 10-minute hike along the Whitley Farms and Bryan's Field trails leading from the White Clay Creek State Park Possum Hill parking lot."
Ben Kranefeld
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
The best approach is to navigate to the Possum Hill parking lot at White Clay Creek State Park. From there, follow the trail signs for Whitley Farms and Bryan's Field. Be aware that Google Maps may not provide the most direct route, so pay close attention to trail markers and numbered hunting spots (22 & 23) for guidance.
While the marker itself is clearly marked once you're on the right path, reaching it can be a bit confusing. It's recommended to start at the Possum Hill parking lot and follow the designated trails.
The Possum Hill parking lot within White Clay Creek State Park is the recommended starting point for accessing the trails leading to the marker.
GPS can be unreliable for the final approach. It's best to use it to get to the Possum Hill parking lot and then rely on park signage and trail markers.
Yes, when you are on Bryan's Field trail, look for numbered signs (22 and 23) that indicate hunting spots. This is a key area where you'll need to make a turn to reach the marker.
🎫 🎫 Tickets & Entry
Yes, there is a daily entrance fee for White Clay Creek State Park. It's $4 per day for in-state visitors and $8 per day for out-of-state visitors.
Absolutely! An annual park pass is available for $30, which is a great option if you plan to visit multiple times throughout the year.
While specific hours can vary, state parks are generally open from dawn to dusk. It's always a good idea to check the official White Clay Creek State Park website for the most current information. :clock1:
No, tickets are typically purchased upon arrival at the park entrance or via self-pay stations. Advance booking is not usually required for general park entry. :ticket:
Information on specific discounts for seniors or military personnel can usually be found on the state park's official website or by contacting the park office directly.
🎫 🏞️ Onsite Experience
The hike to the 'Post Mark'd West' monument is approximately a 10-minute walk from the Possum Hill parking lot, following the Whitley Farms and Bryan's Field trails.
It's a stone monument erected in 1953 that marks the original location of a wooden post placed by Jeremiah Dixon and Charles Mason along the Pennsylvania-Maryland border.
Yes, the trails around Bryan's Field offer a network that can provide up to 10 miles of hiking, allowing for a more extensive exploration of the park.
The trails are generally maintained, but some sections, especially the turn-off to the marker, might be less obvious depending on the season. Look for numbered hunting spot signs for guidance.
You can expect a natural, wooded environment typical of a state park. The trails wind through forests, offering a peaceful outdoor experience. :evergreen_tree:
📸 📸 Photography
Capture the historic 'Post Mark'd West' monument itself, perhaps with the surrounding natural landscape. The trails also offer scenic shots of the wooded park. :camerawithflash:
Yes, the monument is clearly marked and accessible, making it straightforward to photograph. Consider visiting during golden hour for softer light. :sunrise:
Generally, photography for personal use is permitted in state parks. However, commercial photography might require special permits. Always check park regulations if unsure. :memo:
Early morning or late afternoon often provide the best lighting conditions, with fewer crowds and softer shadows. :sunflower:
Drone usage in state parks is often restricted or prohibited. It's crucial to check the specific regulations for White Clay Creek State Park regarding drones before flying. :drone:
For Different Travelers
Tailored advice for your travel style
👨👩👧 Families with Kids
Consider making a day of it by bringing a picnic to enjoy in the park. The open spaces and natural environment are great for kids to explore. Ensure everyone wears comfortable shoes, as even the short trails can be uneven.
🚶 History Buffs & Geocachers
This area is also a prime location for geocaching. Many geocachers have hidden containers nearby, adding an extra layer of treasure hunting to your visit. It's a great way to discover hidden spots and enjoy the park's natural beauty while engaging with a modern-day exploration activity. :compass:
👟 Outdoor Enthusiasts
Beyond hiking, the park is also popular for mountain biking. The varied terrain can challenge riders of different skill levels. Remember to check the park's trail maps and any specific regulations for biking before you set out. :mountain_bicyclist:
Deep Dives
In-depth insights and expert knowledge
The Mason-Dixon Line: A Historical Landmark
Visiting the Mason-Dixon Tri-State Marker offers a unique opportunity to stand at a point where history was made. The monument itself, installed in 1953, commemorates the original wooden post placed by the surveyors. It's a relatively short hike from the Possum Hill parking lot in White Clay Creek State Park, making it an accessible historical site for many visitors. The surrounding trails provide a chance to immerse yourself in the natural landscape that has witnessed centuries of history unfold.
Exploring White Clay Creek State Park
For those looking for a more active visit, the park is also known for its mountain biking opportunities. The trails are varied, catering to different skill levels. Additionally, the park is a popular spot for birdwatching and enjoying the changing seasons. Whether you're interested in history, nature, or outdoor recreation, White Clay Creek State Park provides a fulfilling experience. Remember to check the park's fee structure, as daily or annual passes are required for entry.






Social
from TikTok, Instagram & Reddit