How do we become spatially intimate with Beowulf? Where do we feel closest to this poem? This essay locates the essential space of Beowulf not in Beowulf’s indistinct Scandinavian homeland, nor under the bright lights of the ‘historical’ Heorot at Lejre in Denmark, but in the fens of East Anglia. Drawing on the author’s own experiences of living in or near the fens, this essay discusses how the poem’s first descriptions of Grendel conjure up a fenland that still rings true to East Anglians in the twenty-first century and how the fenland environment is essential to the poem’s ‘psychology of terror’. Turning to the perspective of indigeneity within the poem, the essay then argues that intimacy of this sort fosters, and is fostered by, a sense of Grendel and his mother as tragic protagonists rather than demonic antagonists, forced into acts of resistance by Hrothgar’s imperialist aggression. Comparing this process to the historical draining of the fens from the sixteenth century onwards, the essay considers the poem’s complex explorations of the nature of ‘home’ and the violence of ecocide.