Managers of a Neolithic flint mine won't be caught knapping as they gear up for the landmark's first Flint Festival.

The event at Grime's Graves near Thetford on Saturday will give families the chance to sharpen their prehistoric tools while celebrating the history of the English Heritage site.

Visitors will be able to explore the grounds of Grime's Graves before heading deep underground into the 5,000-year-old flint mine, the only one of its kind in the UK which is open to visitors.

Flint knapper Will Lord will be on hand to wow visitors with tales from prehistoric days as he demonstrates what flint was used for and the material's importance.

Guided tours will be on offer throughout the festival, which runs from 10am-6pm.

Visitors will also be able to learn more about neolithic mining in the introductory exhibition and families can use an explorer kit to help interpret clues about the area, which is a Site of Special Scientific interest (SSSI).

Marie Spampanato, site manager at Grime's Graves, said: 'We're very excited to be holding our first event Flint Festival at Grime's Graves. It promises to be a great day for everyone with lots of things to see and do and we'll be running guided tours throughout the day, so come along and join us for a day out to remember.'

Tickets for the Flint Festival will be available to purchase at Grime's Graves on the day and cost £4.50 for adults, £2.70 for children aged five to 15, £4.10 for concessions or £11.70 for a family ticket which admits up to two adults and three children. English Heritage members will receive free entry.

For more information, visit www.english-heritage.org.uk/grimesgraves.