Journal Mound Duverre, Davis Mountains, Jeff Davis Co. Texas May 20-21 1/2 - 2 miles. Elevations dropped from 8100 feet at the top of these canyons (crisis) to about 7000 feet. I descended the summit area in a thick canyon, actually. This canyon initially descended very steeply, in a quite heavily vegetated with current & wild rose, running to the north at first, but turning west after about 1/2 mile. There was an open aspen stand where the canyon direction changed. I crossed a steep ridge to the E. and into Toke Canyon, the more western of the two parallel canyons mentioned above. The flora of both canyon was similar. As we near the top of the canyons were stands of aspen, more extensive in the more eastern canyon; just below canyons the aspens, along the water course (both had live water), were Gambell's Oak, Gray Oak, silver-leaf Oak, and Cherry (in W. canyon anyway). Away from the wet zone was ponderosa pine & W. white pine; a few of these conifers were scattered in the watter part of the canyon, and Gambell's oaks were found in pockets away from the sepiarin strip. In the wet strip there was lots of Buckthorn (Rhamnus), some Rose (rare), currant (W. side only), many, many herbs, & some bunch grass. As the gradient flattened at about 7250 feet then were a few junipers and madrones. The surface water was more intermittent from the canyons. Toke Spring is at 7100' in Toke Canyon (the more western of the two parallel canyons). I don't know the name of the more eastern canyon. On May 21, I was joined by all others, reversing my traverse about 7600 feet into the E. canyon. John Doe and I continued into Toke Canyon, covered this to its tops, and then down to Toke Springs. Kelly & Tom returned to Bridge Bay, Grove Camp and drove to Toke Springs to pick us up. The weather May 20 was warm and breezy, & widely scattered after- noon clouds. Temperature 60°-80°F. Winds 5 mph out of W. At 19:30, clouds started to roll in on strong E. winds. At 21:30 a light thunderstorm