Egyptian pottery in the southern Sinai during the Late Bronze and Early Iron I (Ramesside) periods has been discovered at the mining camps of Serabit el-Khadim and Timna. Objects which bore Proto-Sinaitic inscriptions, the same as those found in Canaan, were discovered at Serabit el Khadim in the Southern Sinai. Several of these were dated in the later Bronze Age. These encampments provide evidence of miners from southern Canaan. The remote site of Serabit el-Khadem was used for a few months at a time, every couple of years at best, more often once in a generation. The journey to the mines was long, difficult and dangerous. Expeditions headed by Professor Mazar examined the tell of Feiran, the principal oasis, of southern Sinai and discovered the site abounded not only in Nabatean sherds but in wheel-burnished sherds typical of the Kingdom of Judah, belonging to Iron Age II.