Geocaching

The posted coordinates are for the Cedar Falls, Iowa Post Office. The cache is NOT in or next to the building. The cache will be within 1 mile of  the Post Office.

A simple puzzle once you learn how to apply this set of three numbers for the cache. (Grid:Row:Column)

Grid:
When you enter the Post Office you will find multiple walls with post office boxes. A normal group of boxes is about 5 feet tall by 2 feet wide, a grid may have from one group of boxes to many groups of boxes. The Grid refers to ALL of the groups of boxes in one single wood frame. Each wood frame of boxes is considered a separate Grid.

The Grid number is determined by the number of the P.O. Box in the upper right-hand corner of the Grid.
Find the P.O. Box number that matches the Grid number and you are standing in front of the Grid you need to use.

A Grid has rows of boxes that run from left to right and columns that run from top to bottom. The P.O. Boxes at the bottom of the grid are usually bigger than the boxes at the top. The rows will normally line up across the entire grid, but the columns will not. There will be more columns on the top of the Grid and less along the bottom of the Grid.

Row:
Starting at the upper left corner of the Grid and counting from top to bottom, the top Row is 1 the next Row down is 2 and continuing on to the bottom of the Grid.

Column:
Counting from left to right, the leftmost box is Column 1 and the next box from the left is Column 2 and continuing on to the right of the Grid. Warning, Row 1 will probably have more Columns than Row 9, so be sure to be counting across in the correct row (That is why I gave you the Row number before the Column number).

Each GRID, ROW, COLUMN is given a letter.

Use the letters in the formula to find the coordinates to the final cache location.

Coords to the final… 

N 42º 3(A).(B-C) 

W 092º 2(D÷71).(E+F)

Remember most GPSr’s have a Calculator on them. If yours does not, your cell phone probably does.