congratulations to MulderClan FTF
This is a pirate series cache. You must walk the dyke to find all of them each cache is a famous and feared pirate read more about them if you dare. At the end there is a multi cache to find the final cache and the treasure. So be careful on your journey to the final cache you will not be disappointed.
Admiral Sir Henry Morgan
Sir Henry Morgan first built his reputation as a pirate when he plundered Santiago De Cuba and Campeche, Mexico shortly after sailing in the buccaneer fleets employed by England to attack Spanish settlements in the 16th century. Later in his life as a pirate, he was commissioned by Jamaican governor Modyford to wage a battle against Spanish sailors in the Caribbean, where he ultimately emerged as the victor and solidified his fearsome reputation.
Pictures and info from
http://list25.com/25-most-feared-pirates-to-ever-set-sail/1/