It was very hard to get a shot of this stone, since it's jammed between the wall and the upper part of an old baptismal font with some kind of a palm tree (?) in it. Below is a close-up of a part of the text.

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Here's another "tree-of-life stone" with runes on it.
Like Vg 68 it's part of the floor, close to the altar.

Like on Vg 68 the runes were carved on the frame around the upper part of the tree-design, and unfortunately that part is very much damaged.