I’ve got a story for you me and my friend started a new ark on valguero level 1 default settings, so we make a nice base and stuff and build a raft start exploring. Welcome across an island that grows savroots and rockarrots on it own and had an amazing fishing spot. So we transferred our stego and our trike and also our parasuars its also got raptors which were easy attack tames and a lot of metal but that’s unimportant one day out of the blue we were level 25 and a Rex kills our trike and eats most of our base but left our furnace and Smithy so we come back maybe level 45 around there to get our stuff back from the smithy and furnace and boom alpha Rex level 40 appears. They spawn on islands east/ west outside of valguero spawn islands.