The cache is not at the co-ordinates above. Solve the puzzle to determine GZ :
TWARSJYTDLBWOAP OCRKHZIPANMRGPS AGMTLANCOOHPREM TLCHMSFAQIMOVAT
ETATWAWMDOBEZIP ITNLOLCJDHSTTBA WGSOMGNMRIBMNME EUROEDNCOECBWGS
ECGSEPTTYNCOOHP URLGISHALTWANUT IMFLSDFTFOEDUFO RAMTMAHCIRGBEEC
EFTFYIIOUVCRECG TTYHALRAFELOECB SISIRAXMLCRTAKA CIDHMVESAHMSIMF
NCOTCMISASADASL RPMBLTOAPRHDENG ASLLOLWWFABSTLC EOMRACSOSIOUDOB
EURGBHOMDOCRDLR LEDUTMCEOKFCQED
Assume nothing.
Please leave the cache exactly as you found it, in particular make sure it is not visible from any of the nearby pathways. BYOP.