Dan, Niki and Jamie (of Dzrtgrls fame), Alysia, my dad and I went on a long and blistering hike in late April of 2006 to try to find a set of pictographs in Greenwater Canyon. They are not easy to find and required some searching across a few canyons by us. And even though it was a bit of a distance, the heat was more of a factor in making this hike tough. I guess April was too late to be out in Death Valley.
The pictographs here show a Coso style influence.