Thórsmörk (Þórsmörk) is a stunning nature reserve in the Icelandic Highlands, known for its dramatic landscapes, including glaciers, mountains, and birch forests. Due to river crossings, access is typically limited to modified 4x4 vehicles or special buses, making it less accessible for standard vehicles or those with mobility issues. Solo visits are possible for experienced hikers, but guided tours are highly recommended, especially for navigating the challenging terrain and river crossings. The area is generally accessible from late May/early June to October, depending on weather conditions. Costs can vary greatly depending on transportation and tour options, but budget at least $100-$300 per person for transportation and potential guided activities. A typical visit can range from a day trip to several days for extensive hiking.