Dear Mandy, who also has a postcard blog, couldn't surprise me with better postcard - I've always loved volcanoes related stuff. Sulphur Springs is the "world's only drive in volcano". According to scientists, it is supposed to erupt in around 100 years and the impact of it can wipe out 3/4 of St Lucia. Colorful mineral deposits decorate the volcano. In these deposits are sulfur, copper, iron oxide, alkaline lead, calcium oxide, and carbon. Once again, thanks a lot Mandy!