The monument is more than 2 metres high, and it was mentioned for the first time in the 17th century during the national revision of historic monuments. It was at the time lying under the stone bridge that crossed the river north of Ekilla. It would remain lying there until 1860, when it was moved with great difficulty by Richard Dybeck. After one failed attempt a crew of 12 men managed to move it out of the water and raise it 25 metres north of the bridge, where it still remains. Next to it, there are two barrows and a monument of raised stones. There were formerly two other runestones at the bridge, but they were moved to Ekolsund in the early 19th century. One of them speaks of the same family as U 644, and it is raised after Andvéttr and his sons Gunnleifr and Kárr (one of the sons has the same name as his grandfather and the other one has the same name as his uncle).