Royston Cave will once again be opened for a special Christmas candlelight display on Saturday.
The Melbourn Street landmark will be open between 10.30am and 1pm, and costs £2.50 for adults and 50p for children.
You don’t need to book in advance – just turn up on the day and pay the guide at the door.
The age of Royston cave, a man-made cavern in the shape of a beehive, is still a mystery.
It is known for its extensive wall carvings of saints such as St Katherine, St Laurence and St Christopher. Other figures have been interpreted as pagan symbols.
Find out more by visiting www.roystoncave.co.uk.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here