A boulder with incisions that may date back hundreds of thousands of years has sparked huge interest in the scientific community.

Norway's proximity to the USSR in the Cold War led to it building many military bunkers – some of them vast secret bases.

The age of the lines and how they were formed still needs to be verified, but there is a chance this may be one of the oldest symbolic stone carvings made by our human ancestors – at least 100,000 ...

The rock which contains the etchings is a stone block erected from the volcanic rock gabbro. On its surface are a series of “deliberate” carvings which align with the rock’s angles.

Carved into a mountainside and shielded by roughly 900 feet (275 meters) of solid gabbro rock, Olavsvern features a 3,000-foot (909-meter) exit tunnel complete with a massive blast door.

you could think county borders were drawn depending on what rock was underneath. The only exception to the rule is Country Tyrone which has a bit of everything - clay, basalt, gabbro, granite ...