Congratulations. By now you should have uncovered 5 theories that may explain the strange occurrences around the Bermuda Triangle. This bonus cache is your reward. A scientist named John Hutchison's experiments with eletromagnetism unintentionally produced every phenomena reported in the Triangle. I highly recommend reading more about this, and have included a link which is well worth reading. Some of the theories on it practically blew my mind!
To work out the co-ordinates for this cache, for each theory you should have a number. Substitute the number in the following co-ords:
N 55 4A.MCM W 004 4U.5AT
This should lead you to the final cache. Congratulations and I hope you enjoyed the series.
Gur Uhgpuvfba rssrpg qrfpevorf gur shfvba bs qvffvzvyne zngrevnyf v.r. cynfgvp jvguva jbbq.