In ancient Eretria on the island of Evia, you can catch the ferry to Skala Oropou. Before boarding/leaving the ferry in Eretria you can find this magnetic nano cache. It's identical twin can be found where the ferry reaches land on the other side of the sea.
The ferry takes around half an hour each way and is a pleasant journey when the sun is shining. In Erteria you can visit the ancient ruins, eat at a beach taverna, and swim. In Oropos, you can explore the forests and wide sandy beaches.
The cache is too small to contain a pen, so please bring your own for signing the logbook. You will need to be careful as you search...if you knock the cache and let it fall, it will be impossible to recover. A lot of people are posting "Did Not Find" for this, so I have upped the difficulty level.
W (a.k.a. DidianRay)
