Just adding onto Corgis 500cc calc in light of the IP survey. I'd say it's possible the fault extends along the 1km length shown below given that the faults run parallel to the pink blobs delineated. If instead of 180m length you use 1km, that's 3.5 Moz...
We just need to drill out those yellow crosses on the end to confirm the fault continues along the anomaly.
