Trailhead up to Emma Lake.I'm pretty sure this a member of the Eureka Valley Tuff, erupted out of the Little Walker Caldera.Sweetwater Mountains. These are 6.5-5.3Ma remnants of an eruptive center (volcano!) that produced over 4.5 million ounces of silver!Grandma hikes while Z fuels-up with snacks. Laura and Z stop to ponder the meadows. Mt Emma with a several recessional moraines. a look down-valley at the recessional moraines. Climbing a large recessional moraine. Labels Double Dome Rock