Let me take you somewhere you have never been before. Up on a rock which stands next to the sea, green and magnificent. No, we are not alone here and we’re just uninvited guests. That’s their home and we’re intruding, so be kind and quiet. But beware, for they like to harass you when you least expect it, jump on your back, pull your hair and steal your jacket or your camera. This is the rock of Gibraltar, their rock, and they’ll do what they want.