Hobbyist archaeologists identify thousands of ancient sites in England

Exclusive: Bronze age remains and Roman roads among 12,802 sites discovered using latest technology

Bronze age burial mounds, Roman roads and deserted medieval villages are among almost 13,000 previously-unknown ancient sites and monuments that have been discovered by members of the public in recent months, it will be announced this week.

Truck drivers and doctors are among more than 1,000 people who participated in Deep Time, a citizen science project" which has harnessed the power of hobbyists to scour 512 sq km (200 sq miles) of Earth Observation data, including high-resolution satellite and lidar - laser technology - imagery.