This forms part of an ancient earthwork, which was once 6 miles long. The earthwork is named after Grim (Norse God Oden or Woden). He had many functions including being a god of war, poetry, wisdom, and death.
The cache is placed on a rather interestingly named road, so don't make an 'Ass' out of yourselves when you find this cache!!
Should you wander onto the golf course, there is a footpath across it, but make sure you follow the black and white markers, keep off the green, and look out for flying golf balls!
A night visit is recommended as they say Grim still visits these parts.
The cache is a 2litre plastic tub in black bag.
Recommended parking for this and the other three Grim's caches is located at 51°37.228'N, 0°20.968'W. From here on a clear day one can see the City of London.