Rossmore Forest Park is located only two miles southwest of Monaghan Town and covers a large area of approximately six by three miles. Within its bounds are five fishing lakes. The forests are primarily deciduous with numerous fine specimens of oak, ash, spruce, beech, larch, and giant redwood. It also boasts extensive plantings of rhododendron, many of which were planted over a hundred years ago and are a riot of colour in early summer.
At the posted coords you will see a fisheries notice and a large stone with some engraving on it.
You will find the cache at:
N54 14.ABC W006 59.DEF
What is the second digit in the area code of the phone number on the fisheries notice = A
How many flags are on the fisheries notice: = B
How many pictures of trees are on the fisheries notice: = C
How many letters are to the right of the face on the carved stone = D
How many flowers are engraved on the stone= E
How many words in the name to the left of the face = F
Checksum : A+B+C+D+E+F = 16
Enjoy :)