Warning: It is a long way from the start to the GZ of this cache.
This is a Reverse wherigo cache which requires a Wherigo capable device and cartridge “The Reverse Cache” to play it. From the start location there is a longish walk or a drive then short walk to the final cache. This is not a cache and dash. There is no physical container at the posted coordinates.
Once you are equipped with the right device and software, you have to go to the posted coordinates, find some information and enter this into your device. It will ONLY tell you how far away from the cache you are and not which direction you have to go. The direction and route to the cache are up to you. You can request distance checks as often as you like but you will be rated based on how few times you check distance.
The difficulty of this cache is based on having a first stage to solve, using the wherigo software and then only having distance not direction to find the cache. Finding the cache should be easy. The terrain rating is based on a longish walk or a drive (with nearby free parking) and then shorter walk from stage one to the final cache.
Details of how to get the right device and capability before starting the cache are given below. The idea for a reverse cache came from a gadget cache which used a physical box containing a GPS to measure distance away from a specific location, and that was the only location where the box would open. You can see more about this original idea here https://youtu.be/2yFmPRTRPIk
AVEBURY STONE CIRCLE
This cache requires a visit to the centre of the magnificent Avebury Stone Circle. Constructed around 2600BC the Stones of Avebury have been designated a world heritage site, there is more information at this website.
Whilst the Stones at Stonehenge are now cordoned off, at Avebury you can get right up to the stones, feel the texture and even give them a hug if you are so inclined! There is a National Trust shop, restaurant and an archaeological museum. The pubs are good too!
The Avebury complex has several ancient features in close proximity although most people focus on the biggest stone circle which was “restored” in Victorian. Most of the original stones were buried or used for building in medieval times because during that period people thought that the stones held evil spirits. This cache offers the opportunity to walk through some interesting and beautiful places.
HOW TO PLAY THIS REVERSE WHERIGO
You can only attempt this cache with a Wherigo capable device, for example some models of Garmin Oregon or Colorado, iPhones using the App “Wherigo”, an Android running “WhereYouGo”or a Windows phone running “Geowigo”.
You should download the latest version of this cartridge here.
Select “Download” and then the right software for your device from the menu. If you are using any smartphone then select “Pocket PC device”. You can experiment with this before leaving home to ensure that it works on your device. Thanks to -Waldmeister- for creating this reverse wherigo.
START AT THE POSTED COORDINATES
It will take a short time to collect the information at the start point if you are using the pay and display car park. You will probably want to move your car for the final.
To initialise the cartridge you will need 4 numbers. To obtain these numbers, you will have to visit the posted coordinates where you will find a NT information board and translate these references:
A = Visitor reception
B = Bicycle parking
C = The Dovecote
D = Blue Badge parking
The checksum for all four answers = A+B+C+D = 18. If you have the wrong checksum or the questions don't make sense then something went wrong.
Now substitute these letters for the numbers that you have found into the formulae below to provide three 6 digit numbers required to initialise the wherigo cartridge. I suggest that you write these down, you'll need them to start the software.
A 0 5 B 0 5
0 A 0 C 1 C
0 A 1 D 6 1
You are now ready to start playing the Wherigo. First let the GPS settle for accuracy. I usually wait for about 26' accuracy (it doesn't get particularly good)! You then have to select a language for the cartridge (type the word "English" then press "done"). On the next page you can then enter each of the three 6 digit numbers into the cartridge (in the correct order).
Note that the range limit for a mystery cache from start to final cache is 2 miles, so your first distance measurement from the information board should be less than 2 miles. If it is more then you have the wrong location. However, the final isn’t close to the start point!
There are several other caches in the area of this final so remember to check when you visit. There are also lovely views near the final.
When you get to within 25m of the cache you will be able to see the final co-ordinates which you can enter into a handheld GPS if you wish.
This is my first Wherigo and I placed it here partly to help cachers who want to find several different cache types in one day, many other cache types are available nearby. If you are here to find other caches then I suggest that you start this first to avoid finding other cachers near the final and then discovering you missed it!