Arco is for Noah's Ark!

I received these fascinating images from Brian a while ago, but they got put on hold (along with a load of other stuff) for the passage of Rack Toy Month, and now they can have their 'fifteen minutes' on the Blog. I only vaguely knew of the Arco ark from the odd mention elsewhere including Rudik's book I think (although these are 'large scale') and had therefore assumed that they would be