In 2 Kings 2, when Elijah is about to ascend to Heaven, he illustrates through his path the way Israel took in entering the land under Joshua. After Israel crossed the Jordan, Jericho, Bethel, and Gilgal all featured prominently in their conquering the land. Elijah is following their movement in reverse. He is leaving the land.
But beyond this, Elijah’s movement is that of the high priest leaving the Most Holy Place, passing out of the Tabernacle/Temple, going by or through the area of the Laver (the Jordan), and ascending to Heaven in the fire of the Bronze Altar. It symbolized his life of sacrifice to God ending, and that of a priest leaving the Tabernacle or Temple, having completed his work.