Welcome to the Periodic Table of the Elements Series.
Fluorine. Fluorine is a Gas at STP (Standard Temperature and Presure). Symbol for Fluorine is F. Atomic Number is 9.
For this cache you will need a Tool of the Trade (TOTT). The approach to this cache can be a bit rough and slippery. You should attempt either on foot or by 4WD. Take care doing this cache.
Please BYO Pen.
Gerr. Hc.