Riven Cambium Elk Bugle Tube - Black Walnut

The Riven Cambium Elk Bugle Tube is a handcrafted, mouth-blown elk call built for hunters who want a rich, authentic tone that carries through big timber. Meticulously crafted from premium black walnut tonewood, the Cambium is designed around the acoustic character of natural wood to produce crisp, commanding bull elk vocalizations with the warmth and depth hunters chase on the mountain.

Walnut was chosen for its natural density and tonal qualities, giving the Cambium a distinctive voice that sets it apart from synthetic bugle tubes. The exterior is sealed with a water-resistant finish so the call holds up to wet mornings, rain, snow, and the abuse of backcountry packs without losing its tone or finish. A riveted baffle cap secures the business end of the tube and protects the opening during transport, while an adjustable 550 paracord carry sling lets you hang the bugle from your pack, belt, or shoulder for fast access when a bull starts talking.

Designed to deliver challenge bugles and locator calls that bring big bulls running in close, the tall-profile Cambium is a natural fit for spot-and-stalk and timber-hunting strategies where volume and clarity matter. It pairs naturally with Riven's Elkasus and Cosmic diaphragm mouth calls for a complete elk-vocalization system in the field.

Key Features:

• Premium black walnut tonewood construction for warm, natural elk vocalizations
• Water-resistant finish for dependable performance in wet and cold conditions
• Riveted baffle cap to protect the tone port in transit
• Adjustable 550 paracord carry sling for quick, secure field carry
• Designed for bull elk challenge bugles and locator work
• Handcrafted, built-to-last construction