Strata standing practically straight up on end. South Coast Ranges, Los Padres National Forest. Geology help needed! Looks a lot like the sandstone/breccia of the Devil's Punchbowl formation. OK, yes: I tried to correlate the (approximate) geotag with the geologic map of the quadrangle (ngmdb.usgs.gov/Prodesc/proddesc_176.htm), & I think this is the Sespe Formation (makes sense, as we're running along Sespe Creek here). That would make it terrestrial upper Oligocene (up to 23 MYA) sandstone and conglomerate.
Trees ID'ed as single-leaf pinyon pine by a freakish but definitive method: they're the very same stand shown at www.conifers.org/pi/Pinus_monophylla.php! Which also confirmed my guess as to the exact geotag.
Snapped for its aesthetic value, but I believe this is the bigcone Douglas fir, endemic to a restricted range in the mountains of southern California.