Utah's Great Salt Lake has Robert Smithson's Spiral Jetty of 1970, a massive iodine coil of more than 6000 tonnes of black basalt rocks and earth dredged from the site. (afr.com)
Composed of black basalt rocks and earth, the sculpture comprises the materials of its location: mud, salt crystals, rocks, water. (jamescohan.com)
Taste the local wines and admire the construction of typical black basalt rock houses. (azoresgetaways.com)