Systrafoss is the name of the waterfall where the river Fossá falls from the lake Systravatn, over the mountain edge above Kirkjubæjarklaustur. Low down in the gorge, there's Fossasteinn, which fell from the mountain during a massive thunderstorm in 1830. A beautiful hiking trail leads to the top of the mountain and Systravatn. From the mountain edge, the view is breathtaking, and up there, you see the Golden Nugget, which aim is to recall the history of hydropower plants in Iceland. The Hiking trail, Ástarbrautin (Love Path), starts at Systrafoss. It is 5 km. And you can see Kirkjugólfið on the way. The forest by Systrafoss is from 1945. Skógarstígurinn is a circular path in the forest where one stop is Sönghellir. The forest path is marked by the tallest tree in Iceland, a spruce almost 30 meters high.