וְלִפְנֵ֨י הַלְּשָׁכ֜וֹת מַהֲלַךְ֩ עֶ֨שֶׂר אַמּ֥וֹת רֹ֙חַב֙ אֶל־הַפְּנִימִ֔ית דֶּ֖רֶךְ אַמָּ֣ה אֶחָ֑ת וּפִתְחֵיהֶ֖ם לַצָּפֽוֹן׃
And before the chambers was a walk of ten cubits breadth inward, a way of one cubit; and their doors were toward the north.
Read midrashic interpretation of Ezekiel 42:4: and classical rabbinic exegesis.