Skip to Content

Reviewer notes

Use this space to describe your geocache location, container, and how it's hidden to your reviewer. If you've made changes, tell the reviewer what changes you made. The more they know, the easier it is for them to publish your geocache. This note will not be visible to the public when your geocache is published.

Mystery Cache

Mole's Fibonacci Icon Challenge

A cache by Deepdiggingmole Send Message to Owner Message this owner
Hidden : 6/29/2014
5 out of 5
2 out of 5

Size: Size: small (small)

Join now to view geocache location details. It's free!


How Geocaching Works

Please note Use of services is subject to the terms and conditions in our disclaimer.

Geocache Description:

Mole's addition to the Challenge caches 

As there have been a plethora of Challenge Caches in this area but also further afield, and because I have been able to find many of them, I thought I would set one of my own. laugh
I like the idea that most of the challenge cache owners do themselves qualify for the challenges that they have set – which not only shows the amount of work they have put into this hobby, but also shows that the challenge is possible to achieve – this helps the reviewer decide whether the challenge falls within GC guidelines – namely that the challenge is achievable.

We often hear about the 11 icon challenge – this is a task to find caches with 11 different icons in a one day period.

I have not achieved this – mainly due to the fact that one of the icons – the webcam cache - is now a rare beast and I own two of them making finding 11 icons for me a very hard task. I fret not, I managed 9 icons once and am happy with that.

What I have managed to do however, is find 10 caches with each of 11 different icons (Traditional, Multi, Mystery, Earthcache, Letterbox, Virtual, Webcam, Wherigo, Locationless, Event and Lab) and this is what gave me the idea for this challenge – Find X number of caches with X number of different icons.

And so … Rather than make a straight forward numbers challenge – i.e. Find 10 caches of each of 10 icons, I thought I would use the numbers theme in a slightly different way (akin to a few of my puzzle caches)

Fibonacci ….. In mathematics, the Fibonacci numbers or Fibonacci sequence are the numbers in the following integer sequence. Starting with 0 and then 1, adding them together you get 1, then adding 1 and 1 (the next two integers in the sequence) you get 2, then 1+2, 3. 2+3, 5 and so on … So the first 9 numbers in the sequence are as follows 1, 1, 2, 3, 5, 8, 13, 21, 34.

However for the purposes of this challenge the first 1 will not be included.

Using this sequence I realised I had found a certain number of caches for each icon linked to this and so comes the challenge ….

Find the following number of caches of each icon in a day – they do not all have to be found in one day but the number relevant to each icon does - i.e. 1 wherigo in a day, 2 webcams in a day, 3 earthcaches in a day etc.. ….

So the numbers required to qualify

Find 1 Wherigo in a day

Find 2 Webcam in a day

Find 3 Earthcache in a day

Find 5 Virtual in a day

Find 8 Letterbox in a day

Find 13 Puzzle / Mystery in a day

Find 21 Multis in a day

Find 34 Trads in a day

This is 87 caches in total

To clarify - The quantities for each Icon have to be found on the same day - The icons can be found on separate days

For this reason this Cache has a difficulty rating of 5* - the terrain rating is simply relating to where the cache for this challenge can be found

I do qualify for this

The standard rules go with this as follows :-

• They must be Groundspeak caches.

• All past finds count. (So some maybe immediately eligible !)

• YOSM only counts as one cache for the virtual section

• Finds still count even if the cache subsequently gets archived.

• You may not use your own caches unless you adopted after finding it.

• Please supply a bookmark or other form of proof, screen print of qualifying caches – or list within the log (some of the categories may be viewable on your profile so this needs to be able to be seen)

• No ‘Tentative’ finds – you will either qualify or you don’t and at the time of logging your ‘find’ you must qualify and you must be able to demonstrate that you do qualify – though the log can be signed if you haven’t qualified this must be a ‘Note’ until you do qualify (qualifying is on the date you achieve the target NOT the date you signed the log – if you had already signed the log you do not need to re-visit the cache)

• Found logs that don't qualify will be deleted

The cache itself is a medium sized container (though not your usual lock and lock) with room for small TB's / coins hidden just off the path in the woods near Ightham Mote

*** Please Note : A correct checker on Project GC has now been created - Many thanks to Vogelbird ***

Good luck smiley

PGC Checker


Additional Hints (Decrypt)

Sbhaq jvgu pbccvprq fghzc - cyrnfr ercynpr uvqvat vg jryy.

Decryption Key


(letter above equals below, and vice versa)



31 Logged Visits

Found it 21     Write note 8     Publish Listing 1     Owner Maintenance 1     

View Logbook | View the Image Gallery of 26 images

**Warning! Spoilers may be included in the descriptions or links.

Current Time:
Last Updated: on 7/3/2018 6:21:38 AM Pacific Daylight Time (1:21 PM GMT)
Rendered From:Unknown
Coordinates are in the WGS84 datum

Return to the Top of the Page