2885 Gymnogyps californicus February 13, 1946 Hopper Canyon, Calif. Inside the cave there was no carbon smell nor fresh whitewash. About 10' from rear of cave a 3 foot long x 1 ft. thick rock slab had fallen from the overhead & partially blocked the opening though not critically (still plenty of room for cards to pass. Found a few bones & shell (clam type) fragments inside cave & below mouth - very few; I probably collected them before in 1941. A stack of flat rocks I used for a camera rest in the cave was undist- urbed & untouched. This cave is about 40' long. The entrance is visible from rear end. Opens toward the tops of some alders 100± ft. away & a grassy- oaky bank 100± farther - apparently a poor takeoff spot as at most can only drop about 20' without hitting alder tops & must fly only down canyon or turn within 50 yds. of leaving entrance. The egg location was about 8' long & covered with 3±" of fine silt. Many large scours in this one (50±). The silt strip was about 16" wide & the ceiling about 3ft. above: J x-sect egg locale. About 10±' out from the rear, a gentle slope (10±°) starts & leads 10±' to a jumble of broken sandstone fragments of good size (1-2' across). The entrance to the cave is a slanting cleft ± about 8' high. There is a bee nest about