This is the Bonus Cache for the Adventure Lab 'Whitehall Heroes'.
The cache is not hidden at this location, but is within reasonable walking distance.
The Lab spans the length of Whitehall and may be attempted in any order, but most likely you will start from either...
- Trafalgar Square at the Ad Lab headline coordinates and northernmost position for the Ad Lab or...
- Parliament Square, the southernmost stage of the Adventure Lab, and the headline coordinates for this mystery cache.
As you progress through the five stages of the Ad Lab, you will piece together the information which will allow you to find the coordinates for this cache which is at:
N51 AB.CDE W000 FG.HJK
Please be aware that the cache is hidden in a busy area of central London, regularly patrolled by Police and Security Services. Please avoid acting suspiciously. If you are challenged, politely explain about geocaching and comply with any instructions you are given.
You are looking for a 0.2ml plastic vial hidden on the underside of a metal railing. You will need your own pen and something with which to extract the log.
Please be discreet and replace the cache out of sight, as found.
