Welcome to the Periodic Table of the Elements Series.
Krypton (No not the Planet). Krypton is a Gas at STP (Standard Temperature and Presure). Symbol for Krypton is Kr. Atomic Number is 36.
For this cache you will need a Tool of the Trade (TOTT). 4WD is prefered up this road, or high clearance 2WD, or a lovely walk !
Please BYO Pen.