Reviews · Howell Mountain 2012 Arkenstone Obsidian 1 note Tasted 18 February 2016 ProducerArkenstone WineAll vintages RegionNapa Valley · Howell Mountain GrapesRed Bordeaux Blend The note Csimm on this bottle 18 February 2016 Tasting event at 750 Wines in St. Helena with winemakers Russell Bevan, Aaron Pott, Benoit Touquette, Roy Piper, Helen Keplinger, Dan Petroski… Vertically Other vintages All vintages → 2014 2010