וַיִּסְע֖וּ מִסֻּכֹּ֑ת וַיַּחֲנ֣וּ בְאֵתָ֔ם אֲשֶׁ֖ר בִּקְצֵ֥ה הַמִּדְבָּֽר׃
And they journeyed from Succoth, and pitched in Etham, which is in the edge of the wilderness.
Read Kabbalistic (mystical) interpretations of Numbers 33:6: Zohar and classical Jewish mystical sources, free online.