We probably embarked on something a bit energetic for the day before our tough guy marathon. Neverless we made it through to the far side of the Dip sump boulder choke via the Bypass route. The water level coming out of the boulder choke was so high we couldn't get down to the By-Pass passage. We looked up into what we later found out to be waterfall series for a way into the by-pass passage but none could be found. We then decided to go back out of Cwm Dwr arriving 1/2 hour after our callout.