First send it to the desert empire woodland, then click on the small map in the upper right corner to open the map details and come to the river bank in the lower left corner of the map. Then carefully observe the coordinates of the small map and slowly move to coordinates 53 and 98, and then you can find the fourth stone monument on the river bank.

Introduction to the location of the fourth historical stone tablet

First, open the world map and send it to the desert empire woodland.

Then continue to open the map to the lower left corner of the map, as shown in the red circle below.

When you come to the lower left corner, pay attention to the coordinates of the small map, continue to move to 53,98, and then you can see the last stone tablet.