The FizzyCalc tool (using high accuracy) may come in handy for this:
- The coordinates for GZ Boxborough, MA are N42 29.100 W071 30.966
- Find the point that is 1772.304 meters from GZ Boxborough and 2908.285 meters from this cache's listed coordinates.
- What next? Well that's what makes this a puzzle cache! :]
You can check your answers for this puzzle here: Geochecker.com.
UPDATE (8/20/12): The methods for determining GZ have changed again. I have decided to include the Boxborough GZ coordinates above, and have dropped the degree of difficulty down a half-level.
Please remember to replace the container "exactly" as you found it. Thank you, ...and happy caching!
Congrats to g-o-cashers for finding it first!