This work is a study of rock shelter sites used by arctic hunter-gatherers of all periods in the specific physical landscape of continental climate-type tundra in the interior of Central West Greenland investigated by field-surveys from 1999-2002. Excavations alone do not reveal the full significance of these sites and the author includes a review of the ethnographic and ethno-historic sources which show the large variability in the use of caves, rock shelters and boulders: places for telling stories, homes for mythical beings, entrances to the underworld, and centres for ritual and 'magic'.