Hraunfossar, which means "Lava Falls," is a unique and enchanting series of waterfalls located in West Iceland near the Hvítá River, about 120 kilometers (75 miles) from Reykjavík. Unlike traditional waterfalls that fall from a cliff or a single river, Hraunfossar forms where numerous rivulets of glacial water flow out of the porous Hallmundarhraun lava field, streaming gently over a stretch of approximately 900 meters (about 2,953 feet) and cascading into the Hvítá River below.

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The lava field itself was created by a volcanic eruption roughly 1,000 years ago, originating near the Langjökull glacier, Iceland’s second largest glacier. This geological history is visible in the rugged, black lava rocks contrasted by the crystal-clear turquoise water, producing a visually striking "lace curtain" effect.

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The falls are generally low in height, with each rivulet dropping between 0.5 and 3 meters (1.5 to 10 feet), but their wide spread and gentle flow create a serene and captivating spectacle. The area around Hraunfossar is lush with moss-covered lava rocks and vibrant vegetation, adding to its ethereal beauty.

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Hraunfossar is located very close to Barnafoss waterfall, and visitors often explore both in one trip, connected by a short walking trail. The proximity of Víðgelmir, the longest lava cave in Iceland, adds an extra geological point of interest nearby.