Roberts Creek Mountain is the highest peak in the first photo pair.
The rocky foreridge in the second photo pair is underlain by the Ordovician Eureka Quartzite, with various Ordovician through Devonian carbonate formations above the quartzite and various Cambrian through Ordovician formations below it.
A little geology.
Yeah, it was quite smoky when I drove through last week — and probably still is — with this particular batch of smoke coming primarily from the Ferguson fire in Yosemite.Photos taken 1May2018 and 4Aug2018.