Walking charity the Ramblers, crowd sourced every lost historic path in England and Wales in just 6 weeks. We’ll look back at how, why and what next! In February and March 2020, every lost historic path in England and Wales was mapped in a crowd sourcing campaign run by the Ramblers using OS-Geo technologies at its heart. Attracting national media attention, over 3,500 volunteers did a “spot the difference” comparison of over 150,000 sq km of historic and contemporary OS maps and digitised the missing paths. The exercise is Phase 1 in a program to save historic rights of way before a legislative deadline of 2026 beyond which they will be lost forever. In this talk by Ramblers project lead Jack Cornish with Dan Ormsby and Matt Walker from Astun we’ll look at how, why and what next.