This piece was created for the cover of City Of Refuge, the long awaited sequel to Starhawk's novel The Fifth Sacred Thing.  

"In the violent, desperate world of 2048, eco-catastrophes and societal breakdown have left the country splintered. Yet amidst the ruins stands a green and flourishing city where four things are sacred—Air, Fire, Water, and Earth. When the ruthless Stewards of the Southlands invade, the people of Califia defeat them using nonviolence and magic. But they’ll be back, unless the northerners can liberate the Southlands first."

http://starhawk.org/writing/books/city-of-refuge/