From the Ring Road you'll see the beautiful high falls at Seljalandsfoss, which tumble over a rocky scarp into a deep, green pool. A (slippery) path runs around the back of the waterfall. A few hundred metres further down the Þórsmörk road, Gljúfurárbui gushes into a hidden canyon. Sterna and Reykjavík Excursions buses from Reykjavík to Skógar and beyond stop at Seljalandsfoss.