This is just really neat to see!

All were found on this blog - the one that Volvo promoted in the beginning of all this.

Looks like a great group of minds there - and a wealth of information.

also posted there:

Puzzle #18 = The Heard Island cemetery.
Puzzle #19 = Antarctica’s ice desert.
Puzzle #20 = Facing the elements in the Southern Ocean.

I don't know how long they will be up. If you want any for future reference I suggest you save them somewhere. I copied them off and don't know how they will scan. But at least I have a hard copy of all of them.