Snæfell, the great mountain of East Iceland (not to be confused with Snæfell, the great mountain of West Iceland), is rarely seen. She cloaks herself in weather.
Gunnar’s House is just above lake level (and just past the lake), pretty much in the centre of the image.
She is always present, however, not just in the cloud she gathers to herself out of the living air but also in the Lagarfljót, the lake that fills the valley below her. There you can walk along the shore of the water she collects out of the sky. Snæfell is one of the great transformers — much like a great white raven, really.