Whilst I am familiar with all U.K Herps I am not familiar with the Algarve. This photo was sent to me by my uncle who owns a villa that we will be staying it next week. He asked what type of snake this was, to which I replied that it looked to me like a Viperine snake but I would ask this site.
So there, my guess is Viperine, but can anyone correct me if I am wrong?
Thanks,
Rob