וַיִּסְע֖וּ מִסֻּכֹּ֑ת וַיַּחֲנ֣וּ בְאֵתָ֔ם בִּקְצֵ֖ה הַמִּדְבָּֽר׃
And they took their journey from Succoth, and encamped in Etham, in the edge of the wilderness.
Read kabbalistic (mystical) interpretation of Exodus 13:20: and classical mystical sources.