You are correct, I should have used SKC, and that is no doubt why the descent requirements state that the only VMC descent procedure between 16,000ft and 6,000ft must be carried out in the specified area, for no other reason than to avoid Erebus.
It may also be worth remembering that the initial flights were limited to not below FL160. Even from that altitude people must have enjoyed the experience, the visiblity being so good many probably thought they were lower.
Last edited by prospector; 5th Dec 2011 at 04:04.