Coordinate Triangulation
Find the intersection point of bearings from multiple known locations. Essential for solving multi-stage and triangulation puzzles.
Point 1
Point 2
Intersection Point
Latitude
51.509322
N 51° 30' 33.56"
Longitude
-0.124711
W 0° 7' 28.96"
How It Works
The intersection is where two bearing lines meet
Tips
- • Bearings should intersect at angles close to 90° for best accuracy
- • Very acute angles give less precise results
- • Parallel bearings have no intersection
- • Add more points to verify your result
What is Triangulation?
Triangulation is a technique for finding an unknown location by using bearings (directions) from two or more known points. Where the bearing lines intersect is your target location.
How It Works
- Stand at a known point and measure the bearing to the target
- Move to a second known point and measure another bearing
- The intersection of these bearing lines is the target
Triangulation in Geocaching
Triangulation puzzles are common in geocaching:
- Multi-stage caches: Collect bearings at each waypoint
- Puzzle caches: Decode bearings from clues
- Field puzzles: Take compass readings at landmarks
- Historical markers: Bearings referenced to monuments
Accuracy Considerations
For best results:
- Angle of intersection: 90° is ideal; avoid very acute angles
- Compass accuracy: Even 1° error affects the result
- Distance: Errors compound over long distances
- Magnetic declination: Adjust for local variation
Multiple Bearings
Using three or more bearings helps verify accuracy. If all bearings don't meet at exactly one point, the target is likely within the triangle formed by the intersection points (called the "cocked hat").