Paganism is held to be the fastest growing \'religion\' in Britain today. Pagan identities and constructions of sacredness contest assumptions of a \'closed\' past and untouchable heritage, within a socio-politics in which prehistoric archaeology - the stone circles, burial cairns, and rock art of the British Isles - is itself subject to political and economic threats. Pagans see prehistoric monuments in a living, enchanted landscape of deities, ancestors, spirits, \'wights,\' and other non-human agencies to be engaged with for personal and community empowerment. From all areas of Britain and indeed worldwide, people come to sacred sites of prehistory to make pilgrimages, befriend places, give offerings, act as unofficial \'site guardians,\' and campaign for \'site welfare.\' Summer solstice access at Stonehenge attracts tens of thousands of celebrants. Threats of quarrying near Derbyshire\'s Nine Ladies stone circle or Yorkshire\'s Thornborough Henges lead to protests and campaigns for the preservation of sacred landscapes and conservation of plant and animal species. Pagans can be seen as allies to the interests of heritage management, yet instances of site damage and recent claims for the reburial of non-Christian human remains disrupt the preservation ethos of those who manage and study these sites, and the large-scale celebrations at Stonehenge and Avebury are subject to continual negotiation. In this book, an anthropologist and archaeologist examine interfaces between paganism and archaeology, considering the emergence of \'sacred sites\' in pagan and heritage discourse and the implications of pagan involvement for heritage management, archaeology, and anthropology.