What do think this is?

[Chas]

.

Watch this video to find out.

http://a-sheep-no-more.blogspot.com.au/2013/10/giant-ant-colony-excavated-you-wont.html

 

[clivehorridge]

Well Chas, I was going to say I'd seen it, but in the one I had seen the guy used molten aluminium to fill the cast.

http://youtu.be/1IugvemOyZY

Either way, amazing stuff this!