Hallormsstaðaskógur is the largest national forest in Iceland, located in East Iceland near Egilsstaðir. Covering 740 square kilometers, this lush forest is a haven for hikers with its beautiful trails and diverse collection of tree species from around the world. Visitors can enjoy birdwatching, explore the oldest larch grove, and even camp in the forest. With its rich flora and fauna, Hallormsstaðaskógur is a must-visit destination for nature lovers looking to experience Iceland's green side.