See GC99BBM The Halogens for more details about the walk and parking.
The cache is NOT at the posted coordinates. No knowledge of chemistry is required to solve the final coordinates but it might be helpful if you want to solve as you walk.
The elements in Group 18 of the periodic table are known as the noble gases, they are all odorless and colorless with very low reactivity; histroically they were known as the inert gases. They are used in a range of important applications that include lighting, welding, deep-sea diving and space exploration.
Cache is a 60 ml pot containing a film pot.
| PLEASE DON’T FORGET TO BRING YOUR OWN PEN OR PENCIL, AND ENSURE THAT YOU POSITION THE CONTAINER CORRECTLY IN ITS HIDING PLACE FOR THE NEXT CACHER TO FIND. |
The cache can be found at:
N51 13.((G/2)-1)(G/18)(G/18) E000 09.(G-G)(G-G)(G/3)