Input (grade 13): Discovered by Edward John Eyre in 1839, for the following twenty years it was believed that Lake Torrens was an enormous horseshoe-shaped saltpan encircling the northern Flinders Ranges and blocking any path to the interior.
Output (grade 6): Lake Torrens was discovered by Edward John Eyre in 1839. For many years it was believed that Lake Torrens was a large horseshoe-shaped salt lake in the northern Flinders Ranges.