Ocean island basalt, formed from volcanic activity, has been a favored medium for sculptors due to its durability and striking appearance. Among the most famous outdoor sculptures made from this material is the iconic "Moai" statues of Easter Island. Carved from compressed volcanic ash and basalt, these monolithic figures stand as a testament to ancient craftsmanship.

Another remarkable example is the "Giant's Causeway" in Northern Ireland, though not man-made, its hexagonal basalt columns have inspired countless artistic interpretations. In modern art, the basalt sculptures of Isamu Noguchi, such as those in his studio in Japan, blend natural rock formations with minimalist design.

The "Basalt Columns" in Iceland’s Reynisfjara Beach also serve as a natural sculpture, attracting photographers and artists alike. These formations, shaped by cooling lava, create a dramatic outdoor gallery.

From ancient monuments to contemporary installations, ocean island basalt continues to captivate with its rugged beauty and timeless appeal. Whether carved by human hands or nature itself, these sculptures remain some of the most awe-inspiring outdoor artworks in the world.