Quaternary scoria, a porous volcanic rock formed during the last geological epoch, has been used by artists to create breathtaking outdoor sculptures. These works blend natural beauty with human creativity, often becoming iconic landmarks. Among the most famous is "Fire and Water" in Iceland, where the rugged texture of scoria contrasts with flowing water elements. Another notable piece is "Volcanic Echo" in New Zealand, a towering installation that reflects the region's geothermal energy. In the U.S., "Basalt Columns Reimagined" in Washington State showcases scoria's unique durability and aesthetic appeal. These sculptures not only highlight the material's geological significance but also its versatility in public art. Artists favor scoria for its lightweight yet sturdy nature, making it ideal for large-scale installations. Whether as standalone pieces or part of larger landscapes, Quaternary scoria sculptures continue to captivate audiences with their raw, earthy charm.