Places > Southwest > Steingrímsstöð Steingrímsstöð Dráttarhlíð,the hill to the south of Lake Þingvallavatn by the river Sog. In 1956–59 a tunnel was dug through there and the power station Steingrímsstöð, a power station built on the lower side with a drop of 22 m, power 26,4 MW.