A CHEPSTOW resident will be featured on More 4's Treasures Decoded tonight (17th September). Peter James who is managing director of Cintec International, proposed his own theory back in January on how Egypt's great pyramids were constructed, a theory which challenged many of the ideas accepted and shared across the world currently. Contrary to the common opinion that the pyramids were constructed by hundreds of workers using huge ramps, it is Peter's belief that the pyramids were built from the inside out, using a combination of scaffolding and internal ramps. Peter also believes that the pyramids are made with larger core blocks on the outside, with the majority of the pyramid made up of smaller, 'infill' material on the inside. This contradicts the historical belief that the entire pyramid consists of the enormous blocks which can be seen on the outside of the pyramid. Having worked in the construction industry for over 50 years, Peter used his building expertise and vast experience working on Egypt's iconic monuments to give a fresh perspective on the construction of the pyramids. Cintec International has worked in Egypt restoring its historical buildings for 18 years and has undertaken restoration work on Mosques, Temples and both Egypt's Red and Step Pyramids. Many of Peter's ideas developed during Cintec's work on Egypt's Step Pyramid. This is also not the first time that Peter has employed his engineer's mind to answer some of the riddles of the pyramids. In 2013, Peter proposed his theory as to why the Egyptians stopped building the pyramids and instead moved to bury their pharaohs in the Valley of the Kings. His explanation that the decision to stop building pyramids may have been a result of 'thermal movement' causing damage to the outer surface of the pyramid, is now accepted by the archaeological community across the world, including experts at the Cairo University. Peter said: "I was delighted when I was approached by Channel 4 to take part in the programme. "From my first visit to the pyramids many years ago, I have been fascinated with them, and to be able to share my view on their construction on national television is a real honour." Peter's theory will be aired at 9pm on Treasure Decoded: Great Pyramids which looks to resolve the many unanswered questions surrounding how Egypt's great pyramids were constructed. The Treasure Decoded series commissioned by Channel 4, explores the mysteries surrounding the world's most famous historical sites. Pictured above left is Peter inside one of the pyramids in tonight's show