The Sinai Desert and Egypt
137. Desert of Zin where were sent down the manna and the quails
Wilderness od Sin. An area between Elim and Sinai, traversed by the children of Israel in their exodus from Egypt (Ex. 16:1); it is defined more specifically in Exodus 17:1 as the area before Rephidim. In the recapitulation of the wanderings through the desert in Numbers 33:11-12, the order is: Elim - Red Sea - Wilderness of Sin - Dophkah. The localization of Sin naturally depends on the view taken of the route of the Exodus. Accepting the traditional southern route, the desert of Sin would be identical to the plain of al-Marha (or al-Markha), between Wadi Ba'b'a and Wadi Sidri on the west coast of the Sinai peninsula; its position would then be between Elim (Wadi Gharandal?) and Dophkah (Sarabit al-Khadim (?), the turquoise mines exploited in ancient times).
Michael Avi-Yonah, Encyclopaedia Judaica, ad v. "Sin"
Map Section 10 Place Sources