Geocaching Trivia - Most Extreme Geocache

We don't know if Rainbow Hydrothermal Vents is the longest geocache without a find, but it very well could be. This geocache is the most extreme though. It is at a depth of 1.43 miles in the Atlantic Ocean near a hydrothermal vent. It was placed 19 July 2002 by LordBritish. Wonder if my Garmin Vista GPS will work at this depth??

So - If you think that last geocache was tough one you should give this one a try!!