Ice House Cache Stash
To claim this prize you will have to get by a couple of fun hunting stages. Stage 1 is a field puzzle and Stage 2 are posted coords that will yeild this prizes final coordinates.
Stage 1. Field Puzzle
N 38 46.ABC W 120 25.DEF
A. How many monuments are around in this turn out(+3)?
B. The day Moore's (Riverton) monument was placed?
C. How many octagon type of monuments are in front of you?
(from the middle octagon monutment)(Y) - 1,213 = DEF
Stage 2. Pysical Container
For the coordinates to the final ammo can cache you will need to find the posted coords. To do this, with the coords you have from the stage one puzzle(for the posted coords)add a bearing of 196 degrees with a distance of 151 feet. There you will find the coords to the final. 
Stage 3. Ammo Can Container
This is the easiest of the three stages. Enjoy the fruits of the can(with proper trade technics) and please replaced as found. Happy Hunting!!
Through out your adventure you will have good parking for all stages in this hunt. 

