A team of expert engineers, archaeologists and craftsmen are about to join forces in an epic archaeological experiment, to build a full size working replica of a Roman water lifting machine. At almost 4 meters in height, capable of raising 7000 litres of water per hour, this was ancient cutting edge technology. But no-one really knows how it worked or what it really looked like. What we do know is that the machine has to be installed and working in the Museum of London in three months time.