rivers

Hello, recently I made activated charcoal soaps scented with Vanilla FO, after I unmold and cut it I noticed some weird lines on the surface of the soap, are these lye pockets or glycerin rivers?

On my last thread I had some problems with rivers due to my temperatures and what I thought was Titanium Dioxide. After lots of advice I re wrote my recipe and put it through a soap calculator. I did a water discount and lowered my temperatures and that seem to work. But my last batch i tried...