Needles Eye in South Dakota is a nerve-racking tunnel if you have a big vehicle

# Needles Eye: A Granite Adventure in South Dakota

Want to experience one of South Dakota's most unforgettable drives? Head to Custer County and tackle Needles Highway—a stunning 14-mile stretch of scenic road that winds through the Black Hills' iconic granite formations. This section of Highway 87 is part of the Peter Norbeck Scenic Byway, and it's absolutely worth the detour.

The main attraction? The Needles Eye tunnel itself, a one-lane passage carved straight through solid granite with dimensions of just 8 feet 4 inches wide by 12 feet high. It's genuinely the narrowest tunnel in South Dakota, making it equal parts thrilling and claustrophobic (though totally manageable if you're not severely phobic). You'll share the road with other tourists and the occasional charter bus, so confidence in your vehicle's size is key. RV and large trailer owners? This might not be your jam. For details on tunnel specs and current conditions, swing by the visitor center.

Fair warning: this isn't a speedy drive. Budget 45 minutes to over an hour for the full journey—and honestly, you'll probably find yourself crawling along at 20 mph just to soak in the scenery. The narrow, winding road with hairpin turns and granite needle formations means you'll want to pause frequently at pullouts rather than rush through. The asphalt is well-maintained, and nearly all traffic consists of leisurely sightseers.

Nestled in Custer State Park, this road was meticulously planned by former Governor Peter Norbeck, who actually mapped the entire route on foot and horseback. It was finished in 1922, and it's been drawing visitors ever since.

Keep in mind: the road typically closes from mid-October through early April due to snow, so plan your visit for warmer months. There's an entrance fee for the park, but trust us—it's worth every penny.