Stone from medieval church found in Welsh stream

An archeologist taking a walk in the woods discovered an inscribed stone that likely belonged to a nearby medieval church in Wales.  The decoration on the stone dates to the 9th or 10th century. The stone features an unusual cross only seen in two other stones.

The stone is not a new discovery. It appears in a book about Welsh Christian monuments and a cast of it was taken once for the National Museum of Wales. When the stone disappeared, and how it ended up in the stream, are currently mysteries.