This alpine-inspired post-and-beam mountain retreat offering a rare blend of privacy, scale, and engineered craftsmanship across 13+ acres in the heart of Jack London's Valley of the Moon where Bennett Valley vineyards meet redwood forest along the Sonoma Mountain ridge, just minutes from Glen Ellen. Custom-built by an engineer with a focus on durability, efficiency, and longevity, the approximately 3,600 sq ft home offers soaring timber ceilings, three fireplaces, and a chef's kitchen, complemented by a restored vintage barn with full bath and a resort-style pool setting. Soaring timber trusses, vaulted ceilings, and walls of windows frame forest, neighboring vineyard, and ridgeline views from nearly every room, with selective clearing to enhance sightlines. A two-bedroom septic system supports a versatile multi-level floor plan that lives like a 3 to 4 bedroom plus office. The main living level features a primary suite with stone fireplace, spa-inspired bath, and private deck access to a barrel sauna, along with a guest bedroom and full hall bath. The lower level offers a bedroom, full bath, secondary family room with fireplace and deck access, wine storage, and a separate entrance with garage access, ideal for guests or extended living. Upstairs, a skylit loft with full bath provides additional sleeping or creative space. The kitchen features a Thermador cooktop and double oven with warming drawer, two Bosch dishwashers, a built-in side-by-side refrigerator and freezer, a large central island, custom cabinetry, and a walk-in pantry. Multi-zone hydronic radiant floor heating, central vacuum, and a dedicated wine closet. The energy system includes a 9.6 kW solar array, approximately 32 kWh of battery storage, and a 22 kW Generac standby generator for strong backup power and potential off-grid capability. Both the home and barn feature standing seam metal roofs. The private pool setting features a fiberglass pool with stone coping and flagstone decking, complemented by a pergola-covered entertaining area, artificial turf, and raised garden beds, all within a fully fenced, gated outdoor living area. Close to the Glen Ellen Village Market, Jack London Village, local parks and preserves along with beloved destinations including Glen Ellen Zen Center and Cooper's Grove. Rarely does a property combine vision, setting, and craftsmanship at this level.