Outside of the very high Asgard cordon and around it there flows a rapid river (see below), the moat of the citadel. Over the eddies of the stream floats a dark, shining ignitible mist. If it is kindled it explodes in flames, whose bickering tongues strike their victims with unerring certainty. It is the vaferloge, "the bickering flame," "the quick fire," celebrated in ancient songs—vafrlogi, vafreydi, skjót-brinni. It was this fire which the gods kindled around Asgard when they saw Thjasse approaching in eagle guise. In it their irreconcilable foe burnt his pinions, and fell to the ground. "Haustlaung," Thjodolf's poem, says that when Thjasse approached the citadel of the gods "the gods raised the quick fire and sharpened their javelins"—Hófu skjót; en skófu sköpt; ginnregin brinna. The "quick fire," skjót-brinni, is the vaferloge.[21]
The material of which the ignitible mist consists is called "black terror-gleam." It is or odauccom; that is to say, ofdauccom ognar ljoma (Fafn., 40) (cp. myrckvan vafrloga—Skirn., 8, 9; Fjolsv., 31). It is said to be "wise," which implies that it consciously aims at him for whose destruction it is kindled.
How a water could be conceived that evaporates a dark, ignitible mist we find explained in Thorsdrapa. The thunder-storm is the "storm of the vaferfire," and Thor is the "ruler of the chariot of the vaferfire-storm" (vafreyda hreggs húfstjóri). Thus the thunder-cloud contains the water that evaporates a dark material for lightning. The dark metallic colour which is peculiar to the thunder-cloud was regarded as coming from that very . material which is the "black terror-gleam" of which lightning is formed. When Thor splits the cloud he separates the two component parts, the water and the vafermist; the former falls down as rain, the latter is ignited and rushes away in quick, bickering, zigzag flames—the vaferfires. That these are "wise" was a common Aryan belief. They do not proceed blindly, but know their mark and never miss it.
The river that foams around Asgard thus has its source in the thunder-clouds; not as we find them after they have been split by Thor, but such as they are originally, swollen with a celestial water that evaporates vafermist. All waters—subterranean, terrestrial, and celestial—have their source in that great subterranean fountain Hvergelmer. Thence they come and thither they return (Grimn., 26; see Nos. 59, 63, 33). Hvergelmer's waters are sucked up by the northern root of the world-tree; they rise through its trunk, spread into its branches and leaves, and evaporate from its crown into a water-tank situated on the top of Asgard, Eikthyrnir, in Grimnismal, str. 26, symbolised as a "stag"[22] who stands on the roof of Odin's hall and out of whose horns the waters stream down into Hvergelmer. Eikthyrnir is the great celestial water-tank which gathers and lets out the thunder-cloud. In this tank the Asgard river has its source, and hence it consists not only of foaming water but also of ignitible
vafermists. In its capacity of discharger of the thunder-cloud, the tank is called Eikthyrnir, the oak-stinger. Oaks struck by lightning is no unusual occurrence. The oak is, according to popular belief based on observation, that tree which the lightning most frequently strikes.
But Asgard is not the only citadel which is surrounded by vafermists. These are also found enveloping the home where dwelt the storm-giant Gymer and the storm-giantess Aurboda, the sorceress who knows all of Asgard's secrets, at the time when Frey sent Skirner to ask for the hand of their daughter Gerd. Epics which in their present form date from Christian times make vaferflames burn around castles, where goddesses, pricked by sleep-thorns, are slumbering. This is a belief of a later age.
To get over or through the vaferflame is, according to the myth, impossible for anyone who has not got a certain mythical horse to ride—probably Sleipner, the eight-footed steed of the Asa-father, which is the best of all horses (Grimn., 44). The quality of this steed, which enables it to bear its rider unscathed through the vaferflame, makes it indespensable when this obstacle is to be overcome. When Skirner is to go on Frey's journey of courtship to Gerd, he asks for that purpose mar thann er mic um myrckvan beri visan vafrloga, and is allowed to ride it on and for the journey (Skirn., 8, 9). This horse must accordingly have been in the possession of the Vans when they conquered Asgard, an assumption confirmed by what is to be stated below. (In the great epic Sigurd's horse Grane is made to inherit the qualities of this divine horse.)
On the outer side of the Asgard river, and directly opposite the Asgard gate, lie projecting ramparts (forgardir) to protect the drawbridge, which from the opening in the wall can be dropped down across the river (see below). When Svipdag proceeded toward Menglad's abode in Asgard, he first came to this forgardir (Fjöls., i. 3). There he is hailed by the watch of the citadel, and thence he gets a glimpse over the gate of all the glorious things which are hid behind the high walls of the citadel.
Outside the river Asgard has fields with groves and woods (Younger Edda, 136, 210).
Of the events of the wars waged around Asgard, the mythic fragments, which the Icelandic records have preserved, give us but very little information, though they must have been favourite themes for the heathen skaldic art, which here had an opportunity of describing in a characteristic manner all the gods involved, and of picturing not only their various characters, but also their various weapons, equipments, and horses. In regard to the weapons of attack we must remember that Thor at the outbreak of the conflict is deprived of the assistance of his splendid hammer: it has been broken by Svipdag's sword of victory (see Nos. 101, 103)—a point which it was necessary for the myth to assume, otherwise the Vans could hardly he represented as conquerors. Nor do the Vans have the above-mentioned sword at their disposal: it is already in the power of Gymer and Aurboda. The irresistible weapons which in a purely mechanical manner would have decided the issue of the war, were disposed of in advance in order that the persons themselves, with their varied warlike qualities, might get to the foreground and decide the fate of the conflict by heroism or prudence, by prescient wisdom or by blind daring. In this war the Vans have particularly distinguished themselves by wise and well calculated strategies. This we learn from Völuspa, where it makes the final victors conquer Asgard through vígspá, that is, foreknowledge applied to warlike ends (str. 26). The Asas, as we might expect from Odin's brave sons, have especially distinguished themselves by their strength and courage. A record of this is found in the words of Thorbjorn Disarskald (Younger Edda, 256).
Thórr hefir Yggs med árum
Ásgard of threk vardan.
"Thor with Odin's clan-men defended Asgard with indomitable courage."
But in number they must have been far inferior to their foes. Simply the circumstance that Odin and his men had to confine themselves to the defence of Asgard shows that nearly all other divinities of various ranks had allied themselves with his enemies. The ruler of the lower world (Mimer) and Honer are the only ones of whom it can be said that they remained faithful to Odin; and if we can trust the Heimskringla tradition, which is related as history and greatly corrupted, then Mimer lost his life in an effort at mediation between the contending gods, while he and Honer were held as hostages among the Vans (Ynglingas., ch. 4). Asgard was at length conquered. Völuspa, str. 25, relates the final catastrophe:
| brotin var bordvegr borgar asa knatto vanir vigspa vollo sporna. | Broken was the bulwark of the asaburg; Through warlike prudence were the Vans able its fields to tread. |
Völuspa's words seem to indicate that the Vans took Asgard by strategy; and this is confirmed by a source which shall be quoted below. But to carry out the plan which chiefly involved the finding of means for crossing the vaferflames kindled around the citadel and for opening the gates of Asgard, not only cunning but also courage was required. The myth has given the honour of this undertaking