Yngvars saga víðförla is a legendary saga said to have been written in the twelfth century by Oddr Snorrason. Scholars have been skeptical towards this claim but in recent years it has gained more acceptance.
It describes what was the last Viking campaign in the Caspian in 1041, adding much legend to the historical facts. This expedition was launched from Sweden by Ingvar the Far-Travelled (Ingvar Vittfarne), who went into the land of the Saracens (Serkland). There, they apparently took part in the Georgian-Byzantine Battle of Sasireti.
There are many Ingvar Runestones raised in commemoration of warriors who died in the raid, mostly in the Lake Mälaren region of Uppland in Sweden. A stone to Ingvar’s brother indicates that he went east for gold but that he died in Saracen land.