I think the days of finding 250m a day in this cave is coming to close, our only major lead left was found to be underwater, but thankfully not entirely. After pushing through some quite cold helmet off ducks we entered some nice large passage (after a quick dig) and came around the back pf the boulders of death. We explored about 70m of passage before it headed back towards the water and decided it would be best (and possible) to explore these in drier periods (so probably next year). The cave is now just over 2.3km long.