The Bonneville Flats is a large SALT flat located in Utah, USA. It is an area of flat land covered with SALT crusts and is the largest of many SALT flats in the region. The term 'Bonneville Flats' is derived from the name of the explorer, Benjamin Bonneville, who explored the area in the 1830s. The SALT flats are a popular destination for speed records, as the flat terrain and dry climate make it ideal for high-speed driving.