Love of nature is often said to be one of the characteristic features of Celtic Christianity. This work describes how native beliefs about nature were rejected, transformed or restated as the peoples of early medieval Ireland and the Hebrides made Christianity their own. With close reference to the literature of the period it examines the importance of land, hills and mountains, water, trees, fire, the sun and the elements in early Christian and biblical imagery. At a time when Celtic Christianity is increasingly romanticized, this work sets out to put the subject back onto a solid scholarly footing.