Brúará, a clear river originating on the Rótarsandur sands and falling through impressive canyons, Brúarárskörð, between the mountains Rauðafell and Högnhöfði. The most impressive canyons of Árnessýsla, 3–4 km long, dug by Brúará through layers of loose sediments of agglomerate. On the flat land Brúará flows into a long, narrow rift in the middle of the river bed. There is a footbridge there, but there was once a natural bridge, which it is said the cook at the bishopric of Skálholt had destroyed in 1602, when the country was suffering hard times. He wanted to stop travellers from getting to Skálholt and begging for food, but was himself drowned in the river a short while later.