Exterminate! Exterminate!

This is a friendly place - waiters, shopkeepers, fellow tourists (well most) and those who live here. I've been quite fascinated by the cactuses and by the impact of light on their leaves. However, I saw this one a few days ago and was struck by its extremely unfriendly nature. It rather reminded me of Doctor Who ......."Exterminate! Exterminate!