Recently I hid another DAMN cache.
Carpe Diem.
Let
A = 1-2+E
B= 6-7
C = 1-7-7
D = 7
E = 1+1-4
F = 7
Cache can be found at N 51 25.ABC W 002 22.DEF
This cache is part of a series of puzzle caches hidden in the same area, which I've called the Lansdown Puzzle Series. They make an "L" shape on the map. See bookmark for the complete list.
You can validate your puzzle solution with certitude.
Regarding the "Dangerous Animals Nearby". Please do not be alarmed. The Adder is our only venomous snake, the shy adder can be spotted basking in the sunshine in woodland glades and on heathlands. You are very unlikely to come across one here, and I have never seen one. But it is possible as they can be found across the country, except for the Isles of Scilly, the Channel Islands, Northern Ireland, and the Isle of Man.