Bm602 – the last bordermarker – is hidden in a cave at the mediterranean coast and can only be visited by boat. On 21 may 2011 we hired a boat & sailor to get there and I know that Charles & Josette Darrieu did the same.
I was surprised to learn from Serge Poncet that you can also peddle in a kayak to the cave. If the sea is calm, it can be easily done, so it seems. Serge hired a 2-persons kayak from the ‘Centre de Plongée de Cerbère’ (25€ for a half day) and peddled with his wife to the cave.

Serge Poncet is since 2011 passionate about the Pyrenean bordermarkers. He has almost ‘done’ all the bordermarkers east of Andorra and will continue in the Basque country next year. He has served in the French mountain army forces and he wrote me that he is capable of long, long mountain trips. I think we can expect a lot more of him.