House Arryn of the Eyrie is one of the Great Houses of Westeros, and it is the principal noble house in the Vale of Arryn. The Arryn sigil is a sky-blue falcon soaring against a white moon on a sky-blue field, and their words are "As High as Honor".
Their main seat is the Eyrie, an ancient castle in the Mountains of the Moon. It is located astride the peak of the mountain "Giant's Lance", several thousand feet above the valley below.
To find the coordinates of this cache, you have to go to the posted coordinates. Enter the lobby of the One North La Salle Building. It was one of Chicago's tallest building for some time. To your right and left you will see flying falcons (maybe they are eagles, but let's say they are falcons), flying to the right.
A = number of flying falcons
B = number of stories of the building
To get the final coordinates, use the following formula:
N 41 53 ((A*A*B)+B+4*A+1)
W 87 37 ((B*B/A)+B*7+33.75)
The cache is hidden less than 1 mile away.
Pincers might be useful to retrieve the logbook from the cache. BYOP
This cache belongs to a series.
Other caches of the Game Of Thrones Series: