From the resort you have to follow the river :)

Kerlingarfjöll is a mountain range in Iceland's central highlands, known for its geothermal wonderland of steaming vents, boiling mud pools, and rainbow-colored hot springs. Legend has it that a woman troll turned to stone here when the sun came up. The area offers hiking trails, rust-colored mountains, and clouds of steam, making it a unique destination for adventure seekers and nature lovers alike.