I mentioned back here that we visited Margate's Shell Grotto. The grotto was first discovered back in 1835 and has been an attraction ever since. It's all a big mystery, no one knows anymore than that, though there are of course plenty of theories as to how and when it came about and what the patterns depict. It's pretty amazing, I came away with a head full of ideas for a little shell cavern at the bottom of our garden [have I ever mentioned my shell collection]!
If you're heading to Margate you might like this post too.