Murray 1948 Journal June 21 Calmalli, Baja Calif (Mina Sol de Mayo), Baja Calif. This morning there was still wind, along with a high fog - in all very uncomfortable. We drove almost to El Circo before the worst tire blew, then replaced it with the other bad one. Just before Calmalli we found a mine on the hillside not far from the road. This proved to be large by local standards - called Sol de Mayo. There was a long horizontal shaft with several branches and tracks with ore cars still remaining. Then a ladder descended steeply for a seemingly unending distance until finally we reached another level probably more than 200 feet from the surface. There was another horizontal shaft with branches. We had seen a few bats in the entrance of the mine, and down here were 3 or 4. Lewis netted 2 Macrotus californicus which was our total reward for a long climb. There was another shaft with a ladder which went down as far again, judging from a rock thrown down. The walls of this place were a mass of varied minerals, including copper and iron compounds, gold ore, quartz, soapstone and pyrites. We were told later that it was still rich but too expensive to transport ore.