Dig sites are where you get your dino fossils and amber required to make dinos. There are 9 different dig sites. Each holds 3 different species in each site. On the PC and on the xbox you can unlock 5 different sites while on the playstation 2 you can only get 3. On the PC, it is possible to unlock all 9 sites as well as more dig teams through the use of editing game files, however it only applies to new parks that are made after the editing.