We went hiking in the foothills of the Sierra on an absolutely perfect day – blue skies, fluffy clouds, a light breeze, an ambient temperature that was neither hot nor cold. Some distance from the trailhead, where the trail had petered out and we were going cross country, hopping or wading through the creek we were following, we came across something very unusual – a tubular cave in a small granite outcropping.
We do not pass such things by, so we climbed up and had a look. And we found pictographs, painted around the cave entrance and on the ceiling!