Jarvis winery is a 45,000 sq. foot cave designed for creating world-class wines. With Jarvis being completely underground and a natural temperature at a consistent 61 degrees all year round, there is no need for any heating or cooling. The winery operates completely on solar power, and the vineyards are certified green by the California Land Stewardship Institute where sustainable agriculture is used to enhance the watershed and restore habitat. Jarvis is open by appointment only, and includes a tour and sit down tasting of Jarvis wines in a private setting.