Traveling through the twisting underwater tunnel was a constant struggle… but, strangely enough, it was mostly safe. Just as Wind Flower had said, as long as the Chain Breaker did not touch the water, there was little inside the vortex that could threaten them.
If the flying ship did touch the spinning walls of the tunnel, though, death was all but guaranteed — not only because of the terrible current and the obliterating pressure, but also because causing even the smallest ripple was going to alert the harrowing beings dwelling in the unfathomable depth of the Great River of their presence.
Staying away from the walls was not challenging at first, but the deeper they descended, the more perilous that situation became. The tunnel grew narrower, while its twists became more frequent and steep with each passing day. Sometimes, it bent so much that the Chain Breaker flew forward for a while instead of continuously descending.
