Travelling through the forests of northern Scandinavia, one can often encounter characteristic X marks carved into trees.

Traveling through the forests of northern Scandinavia, one can often encounter characteristic X marks carved into trees. However, these are not ordinary symbols, as it is immediately apparent that ...

Researchers have uncovered links between the precursor to the world's oldest writing system and the mysterious, intricate ...

Some shoot out of the soft rock like reptiles bathing in the sun. Others are mysterious depressions resembling an ancient board game played all over the world. And a few are straight-up puzzling.

The discovery, which includes more than 20 ritual protection symbols carved into its walls, was made by Rick Berry, a long-time volunteer at English Heritage. Over the course of two years ...