Kerlingarfjöll, located in Iceland's central highlands, is a mountain range known for its geothermal wonderland of steaming vents, boiling mud pools, and rainbow-colored hot springs. Legend has it that the name Kerlingarfjöll comes from an old lady troll turned to stone by the sun. Accessible only by rough F-roads, getting here requires a 4x4, bus, or tour. Hiking trails, rust-colored mountains, and clouds of steam make this a unique destination, perfect for adventurers seeking a taste of Iceland's wild side.