Thank you all for your comments.
Bjørn, Grytviken is a couple of hours by ship down the coast. Some photos of that coming up.
Jacov, the normal route is two days on a ship from the Falkland Islands. It is quite remote.
Tristin, you might worry if a fur seal gets you. They are large, strong and fast, and attack humans without provocation or warning! Grytviken has been decontaminated, and is a safer derelict whaling station.
Hugh, it was a great trip. I am sure you are right, nature will reclaim it, as I do not think that funds are available to clean it up.
Frank, see my comments above on the fur seals!