Thanks Alan.
I suppose my interest in Shackleton is because of the car link, if anything I'm probably the last person I'd anticipate you folks would expect on a site like this as I'm heavily involved with the internal combustion engine with all their associated problems for the environment.
All that said, I've enjoyed reading the content of the site and for a dyed-in-the-wool petrol-head that I am I'm much better informed about the Antarctic now than I was a month ago - so something has rubbed off!
Argyll.