Hauken, James 1978 Journal attempt to visit Santo Tomas Teyopan, Oaxaca Mexico 30 June-1 July were crossing too deep for us to attempt a crossing in our Saturn stationwagon. It may be crossed through in light trucks or 4-wheel drive vehicles. A man at the crossing said there were no buses to the town, and we decided to try heading into the mountains farther south. Halfway to Tehuantepec, at Magdalena Tequisistlan, we took a dirt road to Anuncion Tlacolulita in the hope that it might continue and climb into the mountains. However by Tlacolulita the road still had not reached to 1000 m elev. and apparently wore its way S through the mountains avoiding high ground. Apparently, by this point the Sierra Madre del Sur has begun dropping to the level of the isthmus. We returned for the evening to sleep near La Reforma made exciting by my having forgotten my sleeping bag, and the rain, and many mosquitoes. The next morning we began returning to Oaxaca, stopping at several places to inquire about other roads into the mountains. The most promising lead is a road leaving Mex 195 at El Camaron, leading towards San Carlos Yautepoc to the S. We were told that beyond San Carlos the road climbs, but that one needs 4-wheel drive to traverse the road. This, combined with a quickly developing case of