Taking the western passage, it soon began to ascend until reaching a another fork.  Jalna remembered what her sister said, about the underground river being unlikely at this level.  "Maybe we should back track since we're going higher." she said.  Tayla would give her a scolding, angry at Jalna for second guessing her.  Judging from the directions the tunnels were branching the one to the left is heading towards a southerly route while the one on the right, northwestern.  Tayla calls it, they are to follow the northwestern path.