Book excerpt: This is the essential handbook for anyone interested in green lanes. Valerie Belsey shows how to identify them on the ground, how to recognise them on antique maps, and how to locate documents and other records which will reveal who used them in past times. She also discusses their ecological value, the current controversy about who should be able to use them, and how to get involved in restoring and protecting lanes in your area. Discovering Green Lanes includes useful contact information, key dates in highway history and sample survey forms for recording wildlife in your local green lane.