Fafnir his foster-son Sigurd to kill the dragon. Regin instructed Sigurd to dig a pit in which he could lie in wait under the trail Fáfnir used to get to a stream and there plunge his sword, Gram, into Fafnir's heart as he crawls over the pit to the water. Regin then ran away in fear, leaving Sigurd to the task. As Sigurd dug, Odin appeared in the form of an old man with a long beard, advising the warrior to dig more trenches for the blood of Fafnir to run into, presumably so that Sigurd does not drown in the
Investigations into Germanic Mythology swam against the stream, but he clearly expressed that which has become an ever stronger certainty today: a large part of the myths of the Germanic tradition —and that is to say basically the Old Norse tradition—must be set back in a time when the undivided Proto-Indo-European people themselves created the vessel of their worldview in myths. There is no shortage of scholarly opinion and no consensus on Viktor Rydberg's works on Indo-European and Germanic mythology. Some scholars feel that his work is ingenious, while others feel the work is too speculative. One scholar expressed the opinion that "Rydberg's views"