Archaeologists from the Museum of Cultural History, University of Oslo, discovered the stone in the autumn of 2021 while investigating a gravefield near Tyrifjorden.
The runes, recording words of an early form of the Proto-Norse language (a northern development of Proto-Germanic), were carved, possibly with the tip of a needle or a knife, in a block of reddish-brown Ringerike sandstone measuring 31x32 cm (12.2 in by 12.6 in).
Zilmer said, "Having such a runic find fall into our lap is a unique experience and the dream of all runologists.
[2] The first three runes of the runic alphabet, ᚠ (f), ᚢ (u) and ᚦ (th), are found in one place on the stone, making this the earliest known occurrence of this sequence.
"[2] The University of Oslo placed the stone on public exhibition from January 2023 until late February 2023.