A film about the Jurassic Coast produced by Devon County Council and Dorset County Council has won a national award.
The film, called Coastal Conflicts, received the silver citation at the Geographical Association Publishers' Awards.
The awards recognise material which will "make a significant contribution to geography" in education.
The film was created as a resource to teach children about coastal erosion.
Councillor Roger Croad, cabinet member with responsibility for the environment at Devon County Council, said: "I am delighted that efforts of this talented group of people have been rewarded.
"Much hard work and dedication has gone into this project, and the result is an excellent educational resource which pupils across the UK can learn from for many years to come."
Anjana Ford, co-creator of the film and education co-ordinator of the Jurassic Coast World Heritage Site, said: "The Jurassic Coast is the only natural World Heritage Site in England and Wales and this resource is an excellent way for children to understand why Unesco has given it such an important designation."
Proceeds from sales of the DVD will be used for future educational projects.