Helen Snelson has long been an enthusiastic advocate for learning history outside the classroom. In recent years, as the extent of the climate crisis has become ever more apparent, she has been rethinking her approach to teaching within and about the historic environment. In this article, written in consultation with Adrian Gonzalez, she focuses both on local site visits and on trips to the battlefields of the First World War. Her intention is both to offer some immediate practical suggestions to history teachers and to set out further ‘difficult’ questions intended to stimulate much wider, collaborative, rethinking about how history teaching might contribute to the development of regenerative sustainability...