My guess would be that the Stones allow to safely travel to the location that the material of the Stone was sourced from. So In the End, you could jump once to each location and leave the stone there and then jump to the next location until you run out of stone loc🐻ations... I guess the Ur Stone was the last, among the Headstone in the Arc`s Wheel that apparently links to Antarc💙tica. The DLC might continue in Antarctica.