There is nothing hidden at the headline coordinates - the headline coordinates are the entrance to the westbound service station building.
Welcome to the M4 Adventure Labs
This series is designed to be played from Leigh Delamere Service Station on the M4 (either side: Eastbound or Westbound), or from layby on the local road crossing the motorway (just north of the service station).
There is a 2 hour parking limit in Leigh Delamere Service Station enforced by cameras. If you want to park for longer then use the layby on the local road, accessed via Junction 17 (you aren’t permitted to drive through service station access entrances). You can pay for parking longer than 2 hours in Leigh Delamere but it isn't cheap (there are signs in the car park)!
All parking waypoints and other information are given on the page for the bonus GCAXB1C “M4 Adventure Labs #001”.
We now have sufficient adlabs and bonuses that they will take longer than 2 hours to complete in one visit. If you want to complete everything currently published in one visit then we recommend using the sideroad lay-by which is a very short diversion. Many people enjoy breaking up completing the adlabs with walking for some bonuses. There is a list of all the bonuses on the page for the bonus GCAXB1C “M4 Adventure Labs #001”.
We welcome new creators who can join our project, even if you’ve never created your own Adventure before. Anyone can get an AdLab credit every 3 months. We would like to see this series grow. For full details please contact us at M4AdLabs@gmail.com
We hope you enjoy our project
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This cache is a physical bonus for M4 Adventure Labs #150.
There is nothing at the headline coordinates, apart from a cafe where you could sit to complete all the Adventures.
When you complete Adventure #150, you will find the coordinates for this cache in the journal.
This is a Westbound bonus. Beware of nearby vehicles, high kerbs / different levels and muggles near this cache.
There is a footbridge between Leigh Delamere Eastbound and Westbound sides if needed. You can also walk through the access exits from Leigh Delamere Service Station to the east of both west and east sides, and walk along over the sideroad road bridge.