Eldvörp is the name of scoria and spatter cones in offset sections that form a row of ten kilometers, and it’s surrounding lava covering 20 square kilometers. It dates back from a volcanic and tectonic episode between 1210 and 1240 called the Reykjanes Fires. At the center of Eldvörp there are geothermal features and a single borehole. Women from Grindavík used to bake bread in the steam from the lava and a trail called Brauðstígur, or the Bread Trail, leads there from the town. Remains of human activity can be found in various places in Eldvörp.