Venus may have an underground tunnel carved by volcano eruptions

An illustration showing a floating spacecraft with a blue search beam looking down at the reddish bumpy surface of Venus with Earth in the far distance.

Scientists analyzing decades-old data from NASA's Magellan mission say they have identified what appears to be a vast underground tunnel carved by volcanic activity on Venus.

If confirmed, the structure would mark only the second time a lava tube has been reported on Venus, adding to similar discoveries on the moon and Mars.