The completion of Neolithic burial chamber will be marked with an open day at the site in Hail Weston near St Neots.

Members of the public are invited to attend the event at Willow Row to see the barrow, which has been handcrafted by stonemasons.

The open day takes place on October 23, between 10:30am and 4pm, and will showcase the barrow, which has been inspired by the ancient burial mounds of our prehistoric ancestors and is the first construction of this type to be built in the county for more than 3,500 years.

Sacred Stones, the company behind the project, are inviting the public to come and view the barrow, which will provide a unique final resting places for cremation urns.

Toby Angel, the company's managing director, said: "The long barrow at All Cannings, Wiltshire (designed and built by the team that now forms Sacred Stones) was recently featured on the BBC's Countryfile programme. It received huge praise and interest and we are truly delighted to present another barrow here in Cambridgeshire. During the build, we have had numerous guests view the barrow. I think we had underestimated quite how people would respond to it. Nearly all have talked about the levels of energy inside the building, and the tranquillity of the location. For many of our guests, it stirred a very emotional response. We can't wait to be able to share the finished structure with everyone who has followed our journey with such interest."

The barrow at Hail Weston took five months to complete and the work was carried out by a small team of stonemasons, using traditional techniques. The project took more than 3,500 man hours and in excess of 300 tons of limestone. Sacred Stones has been invited to build in other parts of the UK and abroad, planning permission has been granted at a site in Herefordshire.

INFO: The site is off the B645 from St Neots, just before Hail Weston, heading for Kimbolton. Guests are invited to register in advance and can find out more about the event on the Sacred Stones Facebook page.