Upper Tunnel Road splits off from the popular Succor Creek Road, which takes sightseers and campers into the Owyhee range and the incredible Leslie Gulch area. Upper Tunnel is a shortcut from this route to the Owyhee Reservoir and multiple campgrounds and fishing spots. Sharp and uneven rocks dominate the first two-thirds of the route on a seldom-used two-track with steep inclines on loose gravel. Airing down is highly recommended, as these rocks can lead to tire punctures. There are numerous beautiful sights, including a spectacular reservoir overlook and surrounding canyons. This portion of the route is difficult and rough but doable for most 4x4s with clearance.
The last third of the trail becomes severe, with a very steep descent and multiple tight switchbacks on a dangerously loose rock-laden trail. This portion is not for the faint of heart and inexperienced offroaders. Please note that pictured in this review is a trailer. This is not advised on this trail and only increases the difficulty and risk level on this expert-level descent.
The beautiful reservoir includes three campgrounds, top-tier fishing opportunities, and water-based recreation.
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