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
RRG Fafnir Fafnir had only just begun test flights at the start of the Rhön competition held in August 1930, when wing root turbulence was found to reduce performance. After this was rapidly reduced by the addition of shaped balsa blocks at the cockpit-leading edge junction the glider, piloted by Günther Groenhoff, had some success, sharing a new record out and return flight of with Robert Kronfeld. Despite several launching accidents in the Alps early in the new year, 1931 was a successful period for Groenhoff and the Fafnir. He made the first glider flight of over , flying from Munich to