Maynard James Keenan is a Pioneer in Arizona Winemaking and created the Caduceus Label for his Arizona Vineyard, Merkin Vineyards. One day, inbetween recording and touring for his award winning bands Tool, A Perfect Circle & Puscifer, he looked out from his patio and realised that the climate, soil and terrain around his home in Northern Arizona was similar to that of some of the great wine regions of the world.

Caduceus Cellars & Merkin Vineyards are a small, independent family run winery with very limited production.