Jabrano speaks truth. Maybe she can care for Grabbo. I know we are at odds on what to do with him, but I am at peace.
As for a parley with the Goblin leader, that could be our death at worst, or if he is amenable, dangerous at the least. I feel if we see what has become of the river we will be able to divine the truth with more clarity about the predicament.
If there is another element involved, such as magic, in the holding back of the river, I would want to know first hand rather than relying on second had information. No offense, although Goblins are quite clever indeed, they don't have a reputation for mental accuity. We've already conceded that they would not have blocked the river without guidance from an outside source.
That is, IF they have blocked the river and not someone else.
Maon continues to look at the stars, noting the brightest ones. He puffs at his pipe, the glow creating deep shadows across his face.