Extravaganza P

If Starship can be made to work it will be a game-changer, not just because of the mass it will be able to lift into space.

The concept is designed to be fully reusable, with both parts - the Super Heavy booster and the ship on top - coming back to Earth to fly, time and time again.

This means it could operate much like an airliner. The long-term cost savings compared with conventional, one-time-use rockets would be immense.

Archaeologists believe the stone would have originally measured more than two metres (6ft) tall. Just over a metre of it survives.

Anne MacInnes of North of Scotland Archaeological Society found the stone lying on the ground under vegetation last August.

Highland Council archaeologist Kirsty Cameron said at the time it was a "once-in-a-lifetime find".