Eyjafjöll, the district between the rivers Álar and Jökulsá on Sólheimasandur. Most of the district is flat land, wet and sandy, between the ocean and steep mountain slopes which, though rocky, are often very grassy. Numerous streams and falls coming off the 300–400 m high mountainside, cut in many places by valleys through which fall glacial rivers from the glacier Eyjafjallajökull which towers in the background.