There are 8 very simple questions to answer, plus one piece of bonus information from another cache.
Question 1 at the Viewpoint: Caradon Hill is 1A miles away.
Question 2 at the Viewpoint: Kit Hill is 10B6 feet high.
Question 3 at the Gate: Look over the gate. The fence has been reinforced with a section from a sheep pen. There are C horizontal rails in this repair. C=7
Question 4 at the Trees: There are D trees (not gorse bushes) within 5 metres of this point.
Question 5 at More Trees: There are E trees within 5 metres of this point.
Question 6 at the Boundary Post: There are F letters in total on both sides of the Boundary Post - these are not necessarily easy to make out, but easy to count.
Question 7 at the Leat: On the sign there are G lines of writing.
Question 8 at the Leat: On the sign there are H words in the bottom line.
Bonus Information from the Barn Hill cache: The red number is I.
Checksum A to I = 40
The final cache will be found at: N 50° 33.(G-I)(C+D)(A-D)' W 004° 04.(B-A)(E+F)(G+H)
PLEASE NOTE THAT THIS IS A NEW CALCULATION AS THE CACHE HAS BEEN MOVED