While doing research at Blechley Park I came upon some recently declassified documents. They dealt with encrypted radio intercepts that to this day remain unread. These were received by a high frequency listening station in Nova Scotia toward the end of the war and were from the German Naval Headquarters to U-101. U-101 was scuddled at the end of the war on May 3, 1945 and it is believed that this was the last communications sent to this boat. The code breakers were close to a solution but unable to break the code but I am sure with your modern computer you can.
A note had been recorded by those who had tried to decrypt this message almost fifty years ago. It should be helpful.
A picture of the most interesting coded intercept has been included as an attachment. Break the code to find the cache. Good hunting.
Signed, Judge Crater