This rune stone contain two runic messages that were carved on separate occations. The first one (N61) was carved on the narrow side of the stone, and it continues on the far left. Below the horse at the bottom of the stone, that's where you'll find the second inscription (N 62), and it says : Engli raised this stone in memory of Þóraldr, his son, who died in Vitaholmr - between Ustaholmr and Garðar (Russia).

Here you can take a much closer look at the main side of the Alstad rune stone, and
here's a photo of both the Alstad rune stone stone and the Dynna rune stone, that are standing at the Historical Museum in Oslo.