West YanZhong Park or Found 158, as it is more affectionately know, is a location that practically everyone knows in Shanghai. This bustling urban oasis holds a treasure trove of history and culture waiting to be discovered. From the Start location you will be able to look down into the bar area which used to be an Industrial mill called Datong Mill.
For this cache you will need to know not only your flags, but also their corresponding ISO 3166 numbers!
From the location where you are looking down into the bar area, you will notice that 18 flags have been painted on the walls/barrier.
The location of the final cache can be found by adding up the ISO numbers of the countries represented by the flags according to the following.
N 31 1 (sum of all the countries in Africa * 5 - all the countries in Oceania)
E 121 2 (sum of all the countries in the Americas, Asia, Europe and the follwoign country
Happy Hunting!
The cache is big enough to take some smaller sized trackables.
* Due to a repainting of the some flags, the maths has had to be shuffled a bit. Sadly Mexico was deemed to complicated! so you will Find two flags of a country ( whcih is similar to Mexico!) and hence the need to add in the flag above!
