P. Brylski 1981 Journal "Yucca Valley", ~ 1 1/2 mi. E. Coso Junction (Hwy 14), Inyo Co., Calif. May 23 630 hrs The 202-107 group et al (L. Riggs, E. Henske, B. Braker & myself) arrived here several hours ago. Drone hire after spending the day at Robber's Roost -- the granitic rock prominence at SW junction of hwy 178 x 14. Yucca Valley's a N-S valley facing southward toward the Oven's Valley. Joshua Trees (Yucca brevifolia) is present in sparse #'s, but their prominence is due to lack of any taller vegetation. A full description of the valley & its vegetation is given in Journal of by same author. In partial summary, soil is gravelly (small stones 5-20 mm on sides) slope is 5-8° to the south. Vegetation includes Chrysothamnus, Yucca brevifolia, Sclazaria some Cholla cactus, some Atriplex. Numerous but not abundant wildflowers. Ground cover is fairly uniform -- roughly 30-40%. Granitic deposits form the N end of the valley which stretches perhaps 2-2 1/2 km. We are situated 1/2 down the valley. We set 140 live Sherman traps (non-folding), baited w/ p. butter & oats-barley mix. About 6 lines were set by different individuals more or less at will. Dipodomys & Perognathus