Because of the heat, the Sonar will not work. To actually find fossils, the player must buy oasis seeds from the guild (they are listed as 'Today's Special' at 20,000 for 1 seed.) and bring them to an old man in the desert. After four oases are created, the player can dig throughout the area, but as long as you have 1 you can dig up common fossils. When the next oasis is created rarer fossils can be found, and so on. This area is where some of the most powerful Vivosaurs in the game are found. It forms the eye of the skull-shaped island.
Vivosaurs in this Dig Site
Orno, Smilo, Arsith, Giganto and Aopteryx appear after one Oasis Seed has been planted. Allo, Perso, Mihu, and Gorgo appear after two to three Oasis Seeds have been planted. T-Rex appears after four Oasis Seeds have been planted.
An asterisk (*) indicates a Vivosaur that is rare.