Kerlingarfjöll is a mountain ridge in the Icelandic highlands. The mountains are a part of a large volcanic system and were formed in sub- glacier eruption. In Kerlingarfjöll, the landscape is marked by volcanic activity – steaming hot springs and rhyolite and obsidian rocks make up a large part of the surrounding. Kerlingarfjöll used to be a ski resort that attracted may Icelanders during the summer months, when the snow lacked near the capital. The ski resort was closed in the year 2000 but the Kerlingarfjöll area still attracts many visitors in the summertime that spend some time hiking around the mountain ridge or come for a quick visit to admire the magnificent hot spring valley.