Holocene basalt, formed from volcanic activity over the past 12,000 years, has become a favored medium for striking outdoor sculptures. Artists and architects leverage its rugged texture and durability to create monumental works that blend natural history with modern artistry. Among the most renowned is "The Basalt Columns" by Olafur Eliasson in Iceland, where towering hexagonal pillars mimic natural formations. Another iconic piece is "Lava Steps" in Hawaii’s Volcanoes National Park, a stair-like installation carved from cooled lava flows. In Japan, the "Aso Caldera Art Project" features basalt sculptures that pay homage to the region’s volcanic heritage. These works not only highlight the material’s geological significance but also its aesthetic versatility in public art. From abstract forms to site-specific installations, Holocene basalt sculptures continue to captivate audiences worldwide.