If you’re a history nerd, one of the best things about living in Britain is the accessibility of many layers of history in the landscape. It seems like every week someone’s tripped over a Roman villa or uncovered a hoard of Saxon gold or found a king in a parking lot. One would think that the country has been thoroughly scoured by now, but the ground keeps throwing up surprises.

The most recent discovery is a circle of 28 carved rocks in the Scottish Highlands. People carved cup-shaped marks on the rocks about 5,000 years ago, and apparently they align with the rising sun and moon in midwinter. So that’s fun.