The cache is at the posted coordinates. But finding the cache is not enough in this case. You MUST sign the one and only log within the cache.
No special equipment or tools are required, just a lot of patience. Or you might get lucky and find the log on your first try.
Sorry, mscrep, you're going to have to solve this one on site.
Lbh pna'g ybt gur pnpur jvgubhg oernxvat fbzr rttf.