The Destruction of Durn Ossek and the Evidence for the Conqueror Worm

The name Conqueror Worm has done considerable injury to the study of Durn Ossek. A conqueror ordinarily leaves something which he wishes to possess; this creature destroyed a mountain city and departed through its foundations. Nevertheless, the name appears upon the relief subscriptions and memorial tablets, and we must retain it if we wish our readers to know what we are discussing. I object when the title is smuggled into the explanation: there is no evidence that the animal intended conquest or had any opinion concerning the inhabitants. Its existence presents difficulties enough without furnishing it with a political education.

Durn Ossek occupied the eastern shoulder of the Vasker Mountains, above the road descending to the Human kingdom of Aurenca. Its western galleries communicated with passes opening upon country then held by the Elven hearth-tribes. More than two thousand years of Dwarven government, including incorporation into the Great Dwarven Empire, had left masonry of very unequal age. The popular engravings show one enormous cavern containing a city conveniently arranged for destruction; survey books recovered from the eastern customs house show inhabited chambers connected by shafts and passages, with extensive workings beneath them. Any account which treats the hold as a hollow turnip has discarded the evidence most useful to understanding its fall.

The destruction occurred on 17 October 1747. The customs ledger establishes the day, corroborated by a coastal merchant’s correspondence; the hour is less certain. Fourteen persons are known to have escaped from within the inhabited works, although only nine left accounts available for examination. Other survivors were outside when the disturbance began. Their testimony concerning noise and discharged dust deserves a hearing, but several histories have promoted them into eyewitnesses of the creature. A witness standing beside a toll-house cannot describe what passed beneath the assembly chamber merely because his grandson has acquired literary ambitions.

Of the nine accounts, three describe a moving body. Two were dictated within a fortnight; the third was written eleven years afterwards. The remaining six establish violent displacement without identifying its agent. Nor are the three descriptions wholly independent: their authors spent several days together at the eastern relief station. Agreement reached after conversation deserves less weight than agreement recorded before it. Professor Halbrecht considers this reservation excessively scrupulous. Since his reconstruction gives the animal seven mouths upon the authority of a song collected sixty years afterwards, I accept his criticism as evidence that I have chosen a useful degree of scruple.

The most extensive sighting was claimed by Ketil Bram, a foundation inspector whose deposition belongs to the first fortnight. From a recessed survey landing he saw what he expressly called “the whole forepart” cross the foundation vault below the southern engine hall. His position deserves attention: the landing stood above the vault floor, behind a projecting pier, and afforded an oblique view along it. Bram reported that the creature broke through the opposite wall, traversed the open space and entered the floor near the western abutment. He escaped by the inspection stair before the landing fell.

Bram described a blunt, rounded front, narrower than the following body, with a transverse opening that widened as masonry accumulated against it. He saw successive heavy folds behind this extremity, their lower portions disappearing beneath rubble while the upper surface remained visible. He reported no eyes or projecting limbs. According to his account, the front bent downwards before the thicker portion followed; the movement carried broken blocks into the new opening in the floor. He claimed to have seen the entire leading extremity and the body immediately behind it; later writers have since extended his view to include the animal’s tail.

The vault contained two maintenance braziers, and Bram said their light remained sufficient until dust obscured the crossing. Their positions appear upon the service plan; whether both were burning rests upon his word. I reconstructed his line of sight from the drawings and found it possible, although narrower than an illustrated history allows. His estimate that the front stood higher than the vault’s eighty-foot springing is useful only as an order of magnitude. His opening may have been a mouth; its apparent widening could also describe a fold compressed against stone. Nevertheless, a leading extremity changing direction, followed by a continuous folded body, is substantial evidence of an animal. It deserves considerably more attention than Halbrecht’s additional mouths.

I visited the accessible remains in 1848 with the mining surveyor Dorrin Ess and six workmen whose familiarity with damaged ground greatly exceeded mine. Our first disagreement concerned a passage I wished to enter because an old plan marked a stair beyond it. Ess observed that the plan represented the mountain before its contents had been rearranged. I persisted until a sounding rod brought down a slab precisely where I had proposed to stand. Thereafter I retained authority over the questions and conceded him authority over our feet. We surveyed from the eastern adit for nineteen days, though the central ruin remained beyond any reasonable expenditure.

We established a succession of failures extending upwards from below the inhabited levels. Pavement slabs had been lifted against the undersides of fallen roof blocks; fragments of a lower retaining wall had been driven into a gallery above it. These relationships exclude a simple downward collapse. Across the lowest accessible chamber lay a broad trough of crushed rock, continuing beneath debris at both ends. Its visible breadth exceeded a hundred feet, and a newspaper subsequently published this as the Worm’s diameter. The measurement belongs to the disturbed ground; how closely that ground fitted the body which disturbed it remains unknown.

More consequential were four enormous passages accessible from surviving workings, each partially choked by collapse. I call them shafts for convenience, although two descended at modest inclinations. Their surviving walls described rough cylinders, with irregular expansions and slight curves along their visible courses. Where the walls survived well enough to measure, the shafts averaged some hundred and twenty feet in diameter; elsewhere fallen material prevented a complete measurement. These dimensions distinguish them from service borings, while their course and finish distinguish them from every Dwarven excavation recorded in the hold’s survey books.

Dwarven miners are perfectly capable of making an inconvenient hole when the ore requires it. I rejected Ess’s first assurance that no competent miner would have made these shafts, since competence cannot be assumed merely to rescue an argument. We therefore examined their relation to the workings. One cut across a dressed drainage passage, leaving its severed continuation visible on the opposite wall. Another passed out of limestone into barren, harder rock without following the mineral seam beside it. The surviving surfaces lacked working benches, tool marks and provision for removing spoil. Their slight bends passed through intact rock, so could not all be attributed to subsequent collapse. Ess’s conclusion survived the examination; my objection had made it considerably more useful.

The fourth shaft descended almost vertically beyond a broken pumping gallery. We could reach its margin under a secured line, but could find no station from which its lower course was visible. A weighted sounding line paid out six hundred feet without establishing a bottom. Twice we felt contact which, upon withdrawal and a change of position, proved to be an obstruction or the wall. Falling fragments gave confused reports, prolonged by echoes, and I refused to publish a depth calculated from these sounds. We established a great open descent interrupted by debris; its full depth remained beyond measurement. “Bottomless”, as used in the excursion literature, records the exhaustion of somebody’s apparatus.

These shafts strengthen the animal interpretation, though they do not establish four separate journeys. We could not follow their buried continuations or determine whether they joined. Nor could we prove that every portion was formed during the disaster: an older natural cavity might have been enlarged or intersected. Their rough cylindrical form, curved courses and destructive intersection with finished works are consistent with the passage of an immense burrower. Ordinary mining provides a poor explanation. Natural cavities remain a serious comparison, particularly where water has removed soluble rock, but the shafts crossed differing beds without the changes of section I should expect from that process. A complete geological account must explain this continuity.

Smooth patches on the trough and shaft walls bore approximately parallel scores. Ess attributed them to stone dragged under immense pressure; I initially favoured a tough integument carrying embedded grit. Loaded sledges upon waste limestone reproduced several features which I had considered anatomical, so I withdrew those features from my description. Repeated shallow scalloping remained unexplained, but unexplained marks do not become scales through the exhaustion of a professor’s ingenuity. No authenticated bodily material has been recovered. The celebrated Ossek fang in the Calder Athenaeum is a broken mineral concretion. I informed its curator before publication, which was the full extent of the courtesy the circumstances permitted.

The strongest witness available to my own questioning was Mereth Dal, formerly a lift attendant, whom I interviewed in her retirement beside the coast. Her earliest statement described a dark, rounded surface rising across the lower goods station, carrying broken masonry upwards. She compared its movement to a sack drawn over a turning wheel. Asked whether she had seen a mouth, she replied that she had been occupied with the brake. I pressed her upon the lighting until she fetched the station maintenance book and showed me the entries recording that its oil lamps had been filled and lit that day. These entries support the lighting conditions; her unusually precise account supplies the rest.

Dal’s evidence establishes neither a head nor a trustworthy length; it does, however, support Bram’s description of a yielding surface without repeating his more elaborate particulars. The third witness described a rounded body crossing a ventilation opening, but wrote eleven years afterwards and contributes little anatomical detail that can safely be separated from intervening conversation. I give greatest weight to the early statements, with Dal’s later answers serving where they can be checked against machinery or records. An agreeable interview cannot acquire the authority of a contemporary deposition merely because I conducted it.

Dal also corrected my explanation of her escape. I had supposed that displaced air raised the lift, attractively connecting two reported phenomena; she had raised it herself, using the accumulator’s remaining pressure after cutting loose a fouled loading chain. Four people escaped upon the platform with her. Asked why this occupied so little space in her original statement, she said the clerk had wished to hear about the Worm. I have examined enough disaster inquiries to recognise the practice: an extraordinary cause receives pages, while the skilled action preserving a witness is reduced to “she escaped”. Her description of the machinery agreed with the surviving drawings.

The later crown of horns first appears upon a memorial woodcut. The supposed furnace in the throat appears to derive from red illumination near the foundry passages, where burning fuel supplies an adequate explanation. Claims that the creature could encircle the mountain depend upon treating disturbances in separated chambers as simultaneous observations of one body. The witnesses possessed no common clock. Much of the destruction unquestionably resulted from collapse following the initial intrusion, and its extent cannot be converted into an animal’s length. Bram saw a front section; Dal saw a passing surface. Neither offered the conveniently complete monster supplied by their illustrators.

Taken together, the early testimony and the accessible shafts persuade me that an immense animal entered the foundations. A geological explanation must account for both the excavations and the reported behaviour of the body. Pressure from below might lift masonry, and dust might deceive a witness, but these possibilities require specific application to the observations. Merely naming two sources of error leaves the work unfinished. I judge the animal explanation substantially stronger, while acknowledging that the absence of bodily remains prevents secure classification. “Worm” describes an appearance; it gives us no warrant for assigning the creature to a familiar family.

Its physiology remains obscure: supporting so great a body, nourishing its tissues and disposing of the heat of movement would impose formidable demands. The shafts suggest passage through rock; they disclose neither its speed there nor the means of excavation. Existing fractures may have reduced resistance. Local magical processes could conceivably assist an organism, but no measurement establishes their operation here. Writing “Draconic influence” beside an impossible calculation does not repair it. Feeding is equally uncertain: missing bodies prove little in inaccessible ruins. The principal disturbance was brief, and the creature’s presumed exit remains buried beneath the works.

Durn Ossek remains uninhabitable because shattered galleries continue to fail and its drainage has been destroyed. At the eastern barrier I disputed an official’s proposed declaration that the approaches were safe because no second attack had occurred. He substituted a notice identifying inspected ground and prohibiting entry beyond it. This is the sole reported encounter; we cannot determine whether the animal was unique or estimate a population from its size. Further investigation should follow surviving records and changes in drainage, with excavation governed by the ground’s condition. Dal requested any revised account mentioning the lift. I sent the proofs, and incorporated her correction to the accumulator pressure before they went to press.