Canonical URL: https://www.iceland.org/craters/kerid Content updated: 2026-09-10 This is the Markdown representation of the page. Interactive tools and forms are available on the [HTML page](). Source-check and review dates retain the meanings stated in the article. --- # Kerið: Crater Lake on the Golden Circle A volcanic crater lake on the Golden Circle, with red rock walls around aquamarine water Updated September 10, 2026 · [Published by Iceland.org]() · [Writing & review]() Location South Iceland Golden Circle route, near Selfoss ## Quick Answer Kerið is a 3,000-year-old volcanic crater in South Iceland whose red rock walls circle an aquamarine lake. A path rings the rim; an entrance fee applies. Kerið is one of Iceland's most recognizable volcanic craters, a 3,000-year-old caldera filled with an aquamarine lake. Located in the Grímsnes volcanic area along the Golden Circle route, the crater's steep walls show layers of red, orange, and black volcanic rock that contrast with the mineral-rich blue-green water below. Unlike most volcanic craters, which form in explosive eruptions, Kerið is believed to have formed when a cone volcano emptied its magma reservoir and the cone collapsed inward, leaving the bowl-shaped depression seen today. Sources and page update Updated: 2026-09-10 Stay on marked paths and the boardwalk. The crater walls are steep and the rock can be loose in places. For sourcing standards and how to report an error, see the editorial policy. Official sources to check - [SafeTravel]() - [Visit South Iceland]() - [Road.is]() - [Icelandic Meteorological Office]() - [Environment Agency of Iceland]() Age ~3,000 years Formed when a volcanic cone collapsed after emptying its magma reservoir Depth 55 m The crater reaches 55 meters deep, with the lake itself about 7-14 meters deep Diameter 270 m The crater spans 270 meters across and 170 meters wide at its widest point ## What to Expect ### Vivid Red Volcanic Rock The crater walls display layers of red, orange, and black volcanic rock formed from different eruption phases over thousands of years. ### Aquamarine Lake The crater lake's blue-green color comes from dissolved minerals and algae, and it stands out sharply against the red rock walls. ### Rim Boardwalk A well-maintained boardwalk and gravel path circles the crater rim, with views into the crater from every side. ### Lakeside Access A wooden staircase descends the western wall to the water's edge for a closer view of the lake. ### Golden Circle Stop Kerið makes an easy addition to a Golden Circle day trip and sits just off Route 35 between Selfoss and Geysir. ### Year-Round Access The crater is accessible throughout the year, though in winter the lake may freeze over and the paths can be slippery. ## Getting There Kerið is located approximately 75 km east of Reykjavík along Route 35 in the Grímsnes area. From Reykjavík, drive east on Route 1 toward Selfoss, then take Route 35 north toward Laugarvatn. The crater is clearly signposted on the western side of Route 35. There is a parking area directly beside the crater with space for cars and tour buses. The drive from Reykjavík takes around one hour. Most Golden Circle tour operators include Kerið as an optional stop. ## Best Time to Visit Kerið is accessible year-round, but the best time to visit is from May through September when the colors are at their most vivid and the paths are dry and easy to navigate. In summer, the long daylight hours give good light for photographs. During winter, the lake may freeze over completely and the surrounding area can be dusted in snow. Early morning or late afternoon visits are recommended during peak summer months to avoid the busiest Golden Circle tour bus arrivals. The [crater operator’s admission page]() includes parking and on-site restrooms with the 700 ISK service fee. Its opening-hours wording follows daylight rather than giving a fixed daily clock schedule; check admission arrangements for a late visit. Planning help ## Kerið Crater FAQs Quick answers with safety notes where it matters. **Is there an entrance fee at Kerið?** The operator lists a 700 ISK service fee, including the crater walking paths, parking and on-site restrooms, as checked on 10 September 2026. Confirm the admission terms before visiting, particularly for a group booking. **Can you swim in the Kerið crater lake?** Swimming in the Kerið crater lake is not officially permitted. The lake is quite cold and the steep sides make it difficult to safely access the water. Instead, view the lake from the rim path or the boardwalk that descends to the water's edge. **How long does it take to visit Kerið?** Most visitors spend 30 to 45 minutes at Kerið. This allows enough time to walk the full loop around the crater rim and descend the boardwalk to the lake shore. The rim path is approximately 900 meters in total. **Is Kerið on the Golden Circle route?** Yes, Kerið is located along the Golden Circle route in South Iceland, near the town of Selfoss. It is often added as an extra stop alongside Þingvellir, Geysir, and Gullfoss. The crater is just off Route 35, so it is an easy detour. [Back to Volcanic Craters]() For a countrywide view of Iceland’s volcanic systems, explore our [Iceland statistics]().