Caduceus Cellars is an underground 3000 Sq Ft. bunker buried into slopes of Jerome, AZ. Here winemaker, Maynard J. Keenan produces 6,000 cases of Italian and Spanish wines from 120 acres on elevations ranging from 4,000 to 5,000 feet. The epitome of a boutique owner owned and operated winery. 

 Caduceus Cellars currently has five different blocks in northern Arizona. 4900ft, the Judiths Block on Cleopatra Hill, Jerome, AZ, is a combination of limestone, volcanic, and sedimentary rock. 3500 ft, The Marzo Block and at 3300 ft, The Agostina block are covered with fine river sediment over a bed of calcareous substrate. The Elephante block, in Cornville, AZ, has a minimum of five different soils/terrain profiles all on a 28 acre site. The Southwest Wine Center, Yavapai College Block is nestled in the alluvial foothills of Mingus Mountain. All this is peppered with volcanic magic dust. The main fruit source for Merkin Vineyards is the historic 70 acre Buhl Memorial Vineyard, in the Kansas Settlement of Willcox, Arizona.

Caduceus Cellars also has a separate brand called Merkin Vineyards. Merkin Vineyards is dedicated to coming as close as they can to 100% Arizona representation.

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