and the border went up to Beth Hoglah, and passed along by the north of Beth Arabah; and the border went up to the stone of Bohan the son of Reuben;
Ancient Near Easterners used natural landmarks (rivers, mountains, deserts, towns, etc.) to construct borders as well as artificial boundaries that they made by drawing lines between sites. Virtually all nations have used these methods, and they are still common today.