|Easton's Bible Dictionary|
Judges 18:12 = "camp of Dan" 13:25 (R.V., "Mahaneh-dan"), a place behind (i.e., west of) Kirjath-jearim, where the six hundred Danites from Zorah and Eshtaol encamped on their way to capture the city of Laish, which they rebuilt and called "Dan, after the name of their father" (18:11-31). The Palestine Explorers point to a ruin called `Erma, situated about 3 miles from the great corn valley on the east of Samson's home.
Int. Standard Bible Encyclopedia
ma'-ha-ne-dan (machaneh-dhan; parembole Dan): This place is mentioned twice: in Judges 13:25 (the King James Version "the camp of Dan"), and Judges 18:12. In Mahaneh-dan, between Zorah and Eshtaol, the spirit of the Lord began to move Samson. Here the 600 marauders of Dan, coming from Zorah and Eshtaol, encamped behind Kiriath-jearim. It has been thought that these two statements contradict each other; or at least that they cannot both apply to the same place. But if we accept the identification of Zorah with Surah, and of Eshtaol with Eshu`, which there seems no reason to question; and if, further, we identify Kiriath-jearim with Khirbet Erma, which is at least possible, the two passages may be quite reconciled. Behind Kiriath-jearim, that is West of Khirbet Erma, runs the Vale of Sorek, on the north bank of which, about 2 miles apart, stand Zorah and Eshtaol; the former 3 1/2 miles, the latter 2 1/2 miles fron khirbet Erma. No name resembling Mahanehdan has yet been recovered; but the place may have lain within the area thus indicated, so meeting the conditions of both passages, whether it was a permanent settlement, or derived its name only from the incident mentioned in Judges 18:12.
Mahaneh-dan (2 Occurrences)
Judges 13:25 And the Spirit of Jehovah began to move him in Mahaneh-dan, between Zorah and Eshtaol. (ASV BBE JPS NAS)
Judges 18:12 And they went up, and encamped in Kiriath-jearim, in Judah: wherefore they called that place Mahaneh-dan, unto this day; behold, it is behind Kiriath-jearim. (ASV BBE JPS WBS NAS)