The Raft Swept into the Underground Flood

The Raft Swept into the Underground Flood marks the point at which the explorers’ attempt to force a way forward becomes an uncontrollable descent. An explosion opens a great abyss beyond the rock, and the Central Sea pours into it as a torrent, sweeping the raft and its three occupants into a channel. The raft survives the passage’s shocks and whirlpools, but the expedition loses most of its cargo, including nearly all its instruments and food. The event turns a dangerous journey into a crisis of survival, with the route ahead dictated by the flood rather than by the explorers’ plans.

The Blast Opens a Route

The disaster follows the detonation of a charge against a rock barrier. The explosion changes the rocks before the narrator’s eyes, and the water rises into a great mass beneath the raft. The opening is not a passage the explorers enter under their own control: the blast has ruptured fissured ground and exposed an abyss, which begins to swallow the inland sea.

The narrator understands the essential cause even amid the sudden darkness and noise. The explosion has effectively made a channel for the sea, transforming still water into a powerful current that drags the raft with it. In retrospect, he recognizes that they have reached the route once taken by Saknussemm, but by an unintended and reckless method: instead of proceeding carefully, they have drawn an entire sea into the passage.

The Raft in the Channel

The raft is thrown into the torrent and carried through a gallery whose breadth the narrator can only partly judge by lantern light. The current is so steep and fast that it seems more violent than the most rapid river he can imagine. Water surges forward in the channel, and the raft is caught in whirlpools, twisting as it goes. It narrowly avoids capsizing, while the walls remain difficult to see clearly in the inadequate light.

The explorers estimate the speed by watching rocks flash past. The narrator believes they may be traveling at no less than a hundred miles an hour. His uncle and Hans cling to the broken stump of the mast, turning their backs against the rushing air. The raft, its occupants, and the surrounding current form a precarious assemblage: the explorers can hold on, but they cannot steer or slow their passage.

The lantern provides only a brief, partial view of their predicament. The remains of their electric equipment have been destroyed in the explosion, making it impossible to restore their former illumination by that means. Hans nevertheless manages to light the lantern, whose wavering light reveals enough of the wide gallery and the nearby rocks to let the narrator grasp the speed and scale of the flood.

Loss of Equipment and Provisions

As the long ride continues, the narrator examines what remains aboard. Most of the cargo has disappeared. Of the nautical and scientific instruments, only the chronometer and compass survive; ladders and ropes have been reduced to a small piece of rope attached to the mast stump. The tools are gone as well: there is no pickaxe, crowbar, or hammer.

The loss is not merely a matter of comfort. Those instruments, ropes, and tools had supported the expedition’s ability to measure, climb, and work its way through the underground terrain. Now, while the flood determines the route, the equipment that might have helped the party respond has largely vanished. The sole surviving chronometer and compass are a stark contrast to the raft’s former cargo of practical and scientific resources.

The food remaining is scarcely more reassuring. The explorers have one piece of dry meat and a few soaked, partly moldy biscuits, not enough for a day. The narrator searches the raft’s cracks, joints, and corners in the hope that more supplies have survived, but finds nothing. The resulting threat of starvation is immediate, though the unstoppable current makes even that prospect seem secondary to the danger of being carried through the abyss.

Darkness and the Continuing Descent

The lantern’s wick burns to its end, and the raft is left in complete darkness. A torch remains, but it cannot be kept alight. The loss of light compounds the loss of instruments and cargo: the explorers can no longer see the channel, while the water continues to carry them onward.

After a long interval, the current accelerates. The narrator senses that they are no longer simply descending a slope but falling, and his uncle and Hans grasp his arms. The raft is suddenly checked, not by striking a hard surface but by the force of a column of water falling over them. The inundation lasts only seconds; then the narrator can breathe again, and the raft carries all three onward. This interruption ends the episode’s first plunge without resolving their danger or restoring control of their journey.

Narrative Significance

The flood reverses the relation between human intention and the underground world. The expedition has used explosives to overcome an obstacle, but the blast releases a force on a scale that their instruments and ingenuity cannot manage. Their own intervention opens the route and makes it lethal: the discovery of a way onward is inseparable from the loss of control over how they travel it.

The event also strips the expedition down to its most basic means of survival. A purpose-built raft remains, but the tools, supplies, and reliable light that made it part of a planned journey are mostly gone. What follows is not a deliberate exploration of Saknussemm’s route but a forced passage through a channel created by the flood, with the explorers dependent on the raft and on one another as they are swept into the unknown.