The coordinates will take you to a sign. Use the information on this sign to work out where you are on the journey.
The geocache is at N51 19.mmm W002 44.mmm
Stone Age: Add 45 to the Northing and Minus 2 from the Westing (mmm only)
Bronze Age: Add 8 to the Northing and Minus 8 from the Westing (mmm only)
Iron Age: Add 33 to the Northing and Minus 10 from the Westing (mmm only)
Information from Discovering Black Down website
Burrington Camp has often been described as a hill fort, but the fact that the earthworks occupy a poor position defensively, and enclose a relatively small internal area, suggest that it may have been a hill slope enclosure of a type common in the south-west.
Geocache placed with permission from the Project Development Officer, Mendip Hills AONB Unit