Exploration at Bulmer Cavern lasted 10 days from December 28, with 20 cavers from Whangarei to Dunedin camping at Bulmer Lake and making the long day trips into the cave to find and explore the new passages. This was the 20th consecutive “New Year” expedition to the cave. The result is 2km of new passages, now the length of the system is 66km/-880m. original here