This is a story (among many) about Alice and Bob. Here it goes ...
Alice hid some treasure for Bob to find. She wishes to send the location of the treasure to him. In order to prevent muggles from discovering it, she decided to encrypt the coordinates using the one-time pad. Unlike modern encryption standards, one-time pad is mathematically proven to be perfectly secure and impossible to crack (even with a quantum computer). She is so happy and confident that no one could steal the treasure. Unfortunately, she was too lazy and used the same key to encrypt both the latitude and longitude ...
Eve, who is interested in the treasure, sniffed Alice's message, but had no idea what to do with it ...
39235f455d594247460007040d584507015404000443064901010249000b08110b450e0c116f
322d5e455c5e4b00000c081700494e421f1b1d01190d1400110d544a4f181347080c020c4320
Would you be able to discover the treasure?
* Please leave Bob's treasure in place after you discovered it, push it as deep as possible.
* Beware of other muggles who may be interested in Bob's treasure.
* Feel free to improvise a story in the log :)

I am pleased to announce that this cache is now part of the Master of Mystery #67 - Townsville, Australia (GCA14QY). Feel free to PM me if you need any help with this mystery :)