Stone ship called Tjelvar’s grave on the island of Gotland, Sweden, dating from the late Bronze Age (1100-500 BCE). According to a myth described in the Gutasaga, it is the grave of Tjelvar, the first person on Gotland.
Gotland was first discovered by a man named Tjelvar. At the time the island was so bewitched that it sank by day and rose up by night. That man, however, was the first that brought fire to the island and afterwards it never sank again. (Peel 1999)
Here’s a section from Marian Donnelly's publication Architecture in the Scandinavian Countries, who speaks of such burials:
Another kind of prominent landmark appeared on the coasts of Sweden during the late Bronze Age, the “ship setting” burials. They were especially popular on the island of Gotland, as might be expected from its seafaring people.
The graves are in stone enclosures from 18 to 60 feet long, planned in the outlines of ships. Whether intended for burials or in some cases simply as memorials, they fulfill the latter function admirably, calling attention to the importance of the ship in a visible manner, unlike the later actual ship burials in which the ships were concealed under mounds.
Spearhead, Iron, Silver Runic inscriptions on the silver coated socket read ‘Rane owns this spear’ and ‘Botfus carved’. Weapons with runic inscriptions are rare, and this one is decorated with silver which makes it one of a kind. The ornamentation is an example of a particularly fine craftsmanship. Stor-Vede, Follingbo, Gotland, Sweden