The posted coordinates are for the Gallery, the cache is not there. PLEASE NOTE WE DO NOT THINK IT IS ADVISABLE TO VISIT AT NIGHT
****THIS IS A BONUS CACHE for those who complete the associated adventure lab****
You will need
Access to the internet (for the checker)
A sense of imagination
A torch (in case of a power cut or Government cutbacks )
A sense of humour 
There are various access points to the Gallery if you are on foot but the closest parking is via Green Lane.
Whose keys to the crime are locked in the car?
Who thinks the bar exam is about mixing cocktails?
Are you a Steve Arnott or an Inspector Clouseau?
Would you recognise a H from an M? (or an A from an R?)
Check the cache name - who is struggling with H?
Time to find out! Take a look at the evidence from the Lab................................
Exhibit 1 "Into the Gallery" (Stage 3) The villain was born in the same year as Joel (2 digits required)
Exhibit 2 “The Escape” (Stage 4) The colour is the colour of his eyes
Exhibit 3 "In hot pursuit" (Stage 5) What3words? The final word tells you his distinguishing feature
Summing Up
So you have the villain's year of birth, the colour of his eyes and his distinguishing feature. Now go back to the witness who will help you to work out the villain’s name (ignore the dates – Line 1 ends in ‘build’)
1st letter of the last word on the last line,
2nd letter of the last word on the last line,
1st letter of first word on last line
2nd letter of last word on first line
2nd letter of the word on the line that has only one word
Repeat - 2nd letter of the word on the line that has only one word
1st letter of the first word on the first line
1st letter on the second line
Click on the word "certitude" below to enter the 4 answers in order into the checker (no spaces) and all will be revealed
You can validate your puzzle solution with certitude
IMPORTANT THIS IS A CONSTANTLY CHANGING EXHIBITION. If you find any evidence has disappeared or get into difficulties on location message the CO via our profile and we will send backup asap
Let the search begin. Good Luck!
To find the stash you can walk along a footpath from the gallery or, for a shorter walk, if you have transport, take it to the waypoint provided.
At the time of placing, all paths to GZ were very muddy.
If you spot any pristine new artwork in the gallery, please upload a photo!