Also found this about the stone

In the autumn of 2021, archaeologists were exploring a region in Norway just west of Oslo called Tyrifjord, already known to be saturated with important artifacts and archaeological finds. The archaeologists were digging at a grave site in the area, where things like charcoal and bones were discovered. Along with these items, a sandstone slab measuring 31 centimeters by 32 centimeters was discovered. It had distinct markings on its surface.

Called the Svingerud Stone for the location where it was discovered, the slab has been determined as “among the oldest runic inscriptions ever found” and “the oldest datable runestone in the world.” Thanks to surrounding artifacts, the markings on the stone are dated between 1 and 250 A.D.

link to a picture of the stone here https://www.abandonedspaces.com/wp-content/uploads/sites/58/2023/01/oldest-runestone-3-97289-640x522.jpg