Judges 18:12

and went up and encamped at Kiriath-jearim in Judah . On this account that place is called Mahaneh-dan to this day ; behold, it is west of Kiriath-jearim .

On their way they set up camp near Kiriath Jearim in Judah. This is why the place west of Kiriath Jearim is called Mahaneh Dan to this day.

And they went up, and pitched in Kirjath–jearim, in Judah : wherefore they called that place Mahaneh–dan unto this day : behold, it is behind Kirjath–jearim.