Yeah plan on going back next time with a full size crow bar or something along those lines. Not sure as some of the bigger bits were near the upper part of the crevice where it was blocked with conglomerated river stone and hard pack. The deeper I went was grey wet dirt with some clay and pebbles. Got a feeling the water in this part of the creek is flowing deep down underneath these massive boulders so the bottom could be many metres down, will report back in time if theres any show.