Discover an unparalleled sanctuary where ancient craftsmanship meets modern off-grid luxury, locally known as the Cobmahol! This 81-acre estate is a masterwork of eco-conscious design, featuring an earthen eco-home meticulously hand-sculpted from cob (monolithic adobe) and straw bale. The approx two-foot-thick walls combined with the substantial thermal mass with high-efficiency insulation combine to create a seamless passive solar experience. The result is a home that maintains a comfortable temperature year-round and stays naturally cool. Oriented due south, the home is bathed in light through expansive glazing, highlighting interior walls finished in white kaolin clay plaster and a traditional poured adobe floor. At its heart, a massive Douglas fir timber frame milled on-site showcases authentic mortise and tenon joinery, rising to hand-finished ceilings. The property is a true wellness retreat, designed for those seeking a private haven. The home & land border a spiritual, intentional community based on yoga & meditation.The three large custom Damanhurian stone spirals, built by artisans from Northern Italy serve as powerful tools for meditation and energetic alignment. Earthen Sweat Lodge is a sacred space for detoxification and spiritual renewal, perfectly integrated into the natural landscape. Mountain Vistas, breathtaking views of snow-capped Sierra peaks provide a dramatic backdrop to your 81-acre private forest. Off-Grid Mastery: A robust solar system installed by the experts at California Solar in Grass Valley ensures a sophisticated, self-sustaining lifestyle. Well with 20K gallons of storage. Heritage Materials: The structure is topped with a metal roof and premium Vermont green slate siding on the dormers, built to endure for centuries.Fenced garden & orchard as well detached art studio close to the home. Located close to the majestic Yuba River and from historic downtown Nevada City as well endless recreation in the Tahoe National forest.This property transcends traditional luxury; it is a legacy estate for the discerning buyer who values non-toxic living, artistic expression, and a deep connection to the Earth. Whether used as a world-class retreat center or a private family sanctuary, this home represents the pinnacle of sustainable luxury.