As suggested in the original Hebrew of Joshua 5:9 (quoted above), the word in Hebrew is related to the word which means “to roll.” is often used to refer to rolling heavy objects such as stones. So in Hebrew the related word means a wheel or circle, or something that rolls. In particular, it seems to refer to a circle of stones, or to a circular altar.
It seems that GILGAL refers to the stone circle of the earth. Notice how the rapture of Elijah takes place at Jericho. Elijah goes from the stone circle to the house of God, then crosses the Jordan, which means “to the other side”.