Diamond Mountain: Above Calistoga in the Napa Valley’s most northwestern quadrant sits the Diamond Mountain AVA, a continuation of the Mayacamas Mountains. An AVA since 2001, the appellation goes from 400 to 2,200 feet above sea level. Its fine-grained, ash-like soils contain shards of reflective volcanic glass, which inspired the name.
Jacob Schram was first to arrive and plant wine grapes here in 1868, and he called his spot Schramsberg Vineyards…