Iceland operates three national parks and maintains protected status over approximately fourteen percent of its total land area. The Environment Agency of Iceland oversees management of these territories under the Nature Conservation Act of 2013. Protection categories include national parks, nature reserves, natural monuments, country parks, and habitat conservation areas. Each category carries specific restrictions on development, vehicle access, and resource extraction.
Vatnajökull National Park covers 14,967 square kilometers across the southern and eastern portions of Iceland. Parliament established the park in 2008 by merging the former Skaftafell National Park and Jökulsárgljúfur National Park with additional protected lands surrounding Vatnajökull glacier. This glacier contains approximately 3,100 cubic kilometers of ice and holds the title of Europe's largest glacier by volume. The park boundaries encompass the entire ice cap and extend into surrounding valleys, volcanic systems, and glacial rivers. Eight percent of Iceland's total land area falls within this single protected territory.
The park contains portions of the Mid-Atlantic Ridge visible above ground. At Þingvellir, sixty kilometers east of Reykjavík, the North American and Eurasian tectonic plates separate at a rate of approximately two centimeters per year. This divergence has created a rift valley where visitors walk between continental plates. Parliament designated Þingvellir National Park in 1930, making it Iceland's first national park and one of the earliest protected areas in Europe. The site served as the location of Iceland's Althing assembly from 930 CE until 1798. UNESCO inscribed Þingvellir as a World Heritage Site in 2004 under cultural criteria.
Vatnajökull National Park provides habitat for Arctic fox populations, Iceland's only native land mammal. Reindeer herds, introduced from Norway in the eighteenth century, graze in portions of the eastern park area. Pink-footed geese nest in the highlands during summer months. The park prohibits all motor vehicle travel outside designated roads and tracks. The Environment Agency issues limited permits for scientific research and film production requiring off-road access.
Skaftafell, now the southern section of Vatnajökull National Park, receives the lowest average annual precipitation in Iceland at approximately 400 millimeters per year. This microclimate supports birch woodland that once covered larger portions of Iceland before Norse settlement. The Svartifoss waterfall drops fifty meters over a cliff face composed of hexagonal basalt columns formed during slow cooling of lava flows. These columns influenced the design of Hallgrímskirkja in Reykjavík, completed in 1986.
Jökulsárlón glacial lagoon sits at the southern edge of Breiðamerkurjökull, an outlet glacier of Vatnajökull. The lagoon formed after 1934 when the glacier began retreating from the Atlantic coast. Icebergs calve from the glacier terminus year-round and drift through the lagoon before exiting through a narrow channel to the ocean. The lagoon reached a depth of 284 meters as measured in 2017. Glacial meltwater gives the water a milky blue-gray color from suspended rock flour. Harbor seals hunt fish among the icebergs throughout the year.
Dettifoss waterfall in the northern section of Vatnajökull National Park discharges an average of 193 cubic meters of water per second. This volume makes it Europe's most powerful waterfall measured by flow rate. The Jökulsá á Fjöllum river, fed by meltwater from Vatnajökull, drops forty-four meters over the falls into Jökulsárgljúfur canyon. The canyon extends twenty-five kilometers downstream from the falls. Columnar basalt formations line the canyon walls, created during flood basalt episodes approximately eight million years ago.
Ásbyrgi canyon forms a horseshoe shape 3.5 kilometers long and over one kilometer wide. Catastrophic glacial floods, known as jökulhlaups, carved this formation during the last ice age when subglacial volcanic activity released massive volumes of meltwater. The canyon floor supports one of Iceland's largest birch forests. Cliffs rise up to one hundred meters above the canyon floor. Norse mythology attributed the canyon's formation to a hoofprint of Sleipnir, the eight-legged horse of Odin, though geological evidence supports the flood origin.
Snæfellsjökull National Park, established in 2001, occupies the western tip of Snæfellsnes Peninsula. The park covers 170 square kilometers of land and extends into coastal waters. Snæfellsjökull glacier caps a 700,000-year-old stratovolcano that rises 1,446 meters above sea level. The most recent confirmed eruption occurred approximately 1,800 years ago. Jules Verne used this volcano as the entrance point in his 1864 novel "Journey to the Center of the Earth." The glacier has retreated significantly since 2000, losing an estimated fifty percent of its ice volume between 2000 and 2019 according to measurements by the Icelandic Meteorological Office.
Coastal areas within Snæfellsjökull National Park contain diverse seabird colonies. Atlantic puffins nest in burrows on coastal cliffs from May through August. Black-legged kittiwakes, razorbills, and common guillemots occupy cliff ledges during breeding season. Harbor seals haul out on beaches throughout the year. Orca pods pass through coastal waters during summer months following herring migrations.
Lava fields from historical eruptions cover portions of Snæfellsjökull National Park. The Búðahraun lava field formed during an eruption approximately 5,000 to 8,000 years ago. Lava tubes within these flows create caves accessible to visitors. The Vatnshellir cave extends 200 meters into a lava tube formed approximately 8,000 years ago. The Environment Agency limits access to guided tours to prevent damage to fragile lava formations.
Hornstrandir Nature Reserve occupies the northernmost peninsula of the Westfjords. The reserve covers 580 square kilometers of uninhabited land. The last permanent residents departed in 1952. No roads connect Hornstrandir to Iceland's road system. Access requires boat transport from Ísafjörður or private vessel. The Environment Agency prohibits all motor vehicle use within the reserve boundaries.
Arctic foxes in Hornstrandir live without human hunting pressure, unlike populations elsewhere in Iceland where farmers hold legal permits to kill foxes that threaten livestock. The reserve population shows reduced wariness of humans compared to hunted populations. Research conducted by the University of Iceland between 2005 and 2015 documented fox denning sites, hunting behavior, and population dynamics in this protected area.
Botanical diversity in Hornstrandir exceeds most Icelandic locations. The reserve contains approximately 260 species of vascular plants. Arctic riverbeauty, moss campion, and alpine bartsia grow in areas protected from grazing sheep that dominate vegetation patterns elsewhere in Iceland. Cliffs along Hornbjarg and Hælavíkurbjarg rise up to 534 meters directly from the ocean, providing nesting habitat for hundreds of thousands of seabirds including northern fulmars, Brünnich's guillemots, and northern gannets.
Fjallabak Nature Reserve encompasses 470 square kilometers in the southern highlands. Landmannalaugar, within the reserve, contains rhyolite mountains displaying pink, yellow, green, and blue mineral coloration. Geothermal hot springs emerge at multiple locations, creating natural bathing pools. The Laugahraun lava field, formed during an eruption in 1477, borders the main camping area. This eruption produced obsidian deposits used by medieval Icelanders for tool manufacture.
The Laugavegur hiking trail connects Landmannalaugar to Þórsmörk valley, crossing fifty-five kilometers of highland terrain. The trail traverses obsidian fields, geothermal areas, glacial rivers, and ash deserts. The Environment Agency maintains thirteen mountain huts along the route. Hikers typically complete the trail in four days during the summer season from late June through early September. Snow and river conditions make the trail impassable outside this window.