This is a bonus cache that you can find once you've completed the Hiltingbury Lakes Adventure Lab.
The Domesday Book indicated there may have been a medieval fish pond and later a 16th century lake with possibly a mill house in what is now know as Hiltingbury Lakes. For the next two hundred years the area reverted to marsh land on Hiltingbury Common and was part of the Hursley Park estate. In the 1890s, the Chamberlayne’s of the Cranbury estate purchased the land and probably dammed the lake. When land south of the lake was sold in the beginning of the 20th century, Edwardian water gardens were created for Merdon House. The Merdon estate was sold in the 1930s when the local authority acquired the lake and water gardens for a public park.
The lake, woodland, ponds, streams and pathways provide a popular, very attractive and important amenity for the surrounding residential population, as well as an excellent habitat for wildlife.
There is more information about the history of Hiltingbury Lakes in the Adventure Lab - if you complete these in the suggested order, this information will be in chronological order.
At some of the stages of the Adventure Lab, you will need to collect additional information before moving on. This is shown in the Location Completion Message, so make sure you read these carefully. If, at any time, you need to go back and look at these messages again, you can do so in the Adventure Lab app by selecting View Journal Entries, and swiping through to the message you require.
The bonus cache can be found at:
N50° 5A.B(B+C)D W001° 2D.(D+E)(F+G)(F-B)
You will find the required answers by following the instructions in the Adventure Lab Location Completion Messages at each stage.
Using your smartphone, click here or scan this QR code to open the Adventure Lab:
If you've not downloaded the Adventure Lab app onto your smartphone, iOS users click here, and Android users click here.