Yes, New Zealands Kokonga Basalt can be used in exterior applications in cold climates. Basalt is a volcanic rock known for its durability, strength, and resistance to weathering, making it a suitable choice for exterior use. It is commonly employed in applications such as paving stones, wall cladding, and countertops, where it can withstand freezing temperatures, frost, and other cold weather conditions without significant damage. Additionally, Kokonga Basalts dark color and natural texture make it aesthetically pleasing for various outdoor designs. However, its always recommended to consult with a local professional or supplier to ensure the specific type of basalt meets the requirements of the intended application and the climatic conditions in the area.