5,000-year-old dog skeleton and dagger buried together in Swedish bog hint at mysterious Stone Age ritual

A section of greyish clay with a dog skeleton and a bone dagger embedded in it.

Archaeologists have found the skeleton of a dog alongside a bone dagger at the bottom of a bog in Sweden. The remains are thought to be 5,000 years old and may be from a mysterious Stone Age ritual.

The unique dog burial was identified during construction work for a high-speed railway in the hamlet of Gerstaberg, about 22 miles (35 kilometers) southwest of Stockholm. Experts with the Swedish group Arkeologerna (The Archaeologists) announced the find in a statement and blog post Monday (Dec. 15).