This is a multi stage cache sequence that can involve simple waypoint projections and converting gps coordinate formats!
The 1st stage is a virtual stage in which you need to obtain information to get you throught the next stages.
Go to the listed begining coords and find the 8th plank of wood on the nearby sign and note its words or word. Take the information and perform a character sum of letters involved. example A=1 B=2 C=3 Z=26 add these characters togther to come up with a 2 digit sum.
Stage 2 will be at: (character value) + 60 meters North and (character value) - 41 meters East. Find second stage!
Final: convert needed information at stage 2 to go find the Final