We walked to the top and admired the views of the port and on the way down stopped to talk to some fellow travellers. As we exchanged stories I saw what I thought was a lizard but quickly realised that it was a snake. Olive brown and about a metre long it slithered by and disappeared into a tiny crack in the steps. Later I asked Antonia who was surprised to hear of a siting in the town and told me that a local naturist had reintroduced these serpents to the island and that they were poisonous. I am all for preserving the natural environment but that is just plain daft!