Ephemerisle festival is Burning Man on boats in the Sacramento River Delta
Guests of Siren Island, a two-tiered wooden isle affixed with four spindly maple tree branches, were relaxing in the late-afternoon sun on the calm waters of the Sacramento-San Joaquin River Delta. They took turns plunging their hands into a steel basin of black lagoon mud then spreading it on one another’s skin — limbs, torsos and faces.