A serious mental or physical challenge. May require specialized knowledge or skills to find or open the geocache.
That would have been WAY to easy for a D5!!
D-rating according to Groundspeak:
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Extreme A serious mental or physical challenge. May require specialized knowledge or skills to find or open the geocache. |
There is no more information on this site to search for. Allthough, there IS a hint, which you MIGHT get enough of information to find, along the solving.