In Skärmarboda you can walk on the bottom of the sea and explore geologic phenomena. Here the inland ice sheet pressed down the mountain, polished it and left behind new kinds of landscapes. When the ice melted, there once was open water here. Today the sea is gone. What remains are large boulders that rise skyward and rocky outcroppings that form intriguing hiding places. At the entrance to the nature reserve, there are many different tours from which to choose, both long and short. One of them is the Yoldia loop ( ), a thrilling 3-km-long adventure starting at the entrance.