The above coords lead you to the location of a Pictish stone placed within the walls of the ruined church. Plenty of information about the place and the stone can be found on the related webpage.
As for the cache itself, it is a short distance from the church and on the old dismantled railtrack of the Newtyle and Glamiss Railway that passed through Eassie. You will have to count the number of letters for the following words from the text located on one of the glass walls of the cross slab shelter. The first line of the text reads 'Eassie Cross Slab'.
- A = ... (second word on line 4)
- B = ... (ninth word on line 4)
- C = ... (eighth word on line 2)
- D = ... (fifth word on line 7)
- E = e1 - e2
e1 = ... (third word on line 5)
e2 = ... (sixth word on line 5)
- F = ... (fourth word on line 7)
The cache is at
N 56° 36.ABC
W 003° 03.DEF
Checksum (total of all collected numbers): 29