the only way it was ever going to work is if we had the support of people who love the outdoors, who love walking, who love maps, who love technology. the tech is powered by esri uk. the geographical software uses powerful mapping and spatial data analytics technology. it allows the team to create and manage the location information, and it's all done on your phone. digital mapping is really the way forward, isn't it? yeah. it means that we can make changes super—quick and make it easily accessible to everyone. but also, it's interactive and we can change things on the fly, we can highlight things, we can take things out, we can add things in. so, it's much more responsive and adaptable compared to when you're just updating stuff like paper maps. can you show me how it all works? yeah, of course. you go to the map of where you are, you find the path that you want.