1. Greenland: Some sources suggest that Leif Eriksson may have been buried in Greenland, where he established the Norse settlements. However, the exact location of his grave is unknown.
2. Iceland: Other accounts indicate that Leif Eriksson might have returned to Iceland and could be buried there. Again, the specific location of his grave site is not known.
3. Norway: There is a suggestion that Leif Eriksson may have been buried in Norway, where his family resided. However, similar to the other locations, the precise burial site remains unknown.
4. Unknown Location: The possibility also exists that Leif Eriksson's grave site has been lost to history and its location may never be discovered.
Given the lack of definitive information, the exact location of Leif Eriksson's burial remains a matter of speculation and further historical research.