Corn Corner offers climbers an accessible but engaging crack climb that captures Yosemite’s raw edge in a compact 130 feet. Located on Sunshine Cliff within the Lower Merced River Canyon, this route presents a single pitch route that demands attention to detail and a solid rack of gear. The climb begins with some loose rock near the base, which warns of the mountain’s shifting nature and reminds you to place your feet carefully as you step into the groove. The middle section is marked by some hollow rock, but it also introduces the crux — a wider section that challenges you to apply a bit more reach and power. Luckily, you won’t need full offwidth technique here; plenty of natural edges and holds provide ample purchase for hands and feet, easing the tension without losing the thrill.

Protection calls for a range of gear from small cams up to five inches, with particular emphasis on doubles in the 2 to 3-inch range to secure your moves. The line rewards thoughtful placements against the vertical stone, with opportunities to sling natural features and bodies in the rock. Once you finish the pitch, the descent is flexible—either escape east down a third-class scramble following the power lines, rappel twice off bolted anchors using a single rope, or top out on Hobknob for a more traditional exit.

Approaching Corn Corner requires a straightforward hike into the Lower Merced River Canyon, with clear access and enough terrain variation to prepare you mentally for the climb ahead. The climb sits firmly in the heart of Yosemite Valley, giving a taste of the park's legendary granite with fewer crowds and a quieter atmosphere. This route suits climbers dialing into crack technique eager to experience a classic Yosemite feel without committing to a multi-pitch expedition. Timing your climb in morning light will bring out the texture of the rock while avoiding the oppressive afternoon sun.

For those plotting their day, pack water and wear stiff-soled shoes with solid edging capabilities to navigate the varied terrain beneath your feet. Keeping your rack organized with emphasis on cams between two and five inches will make your protection placements smoother and the climb safer. Expect light brush on the belay ledge, nothing that can’t be managed but easily avoided by stepping carefully. Weather-wise, spring through early fall serves best, as winter can bring slick conditions and loose debris.

Corn Corner serves as a bridge between challenge and approachability, delivering a climb that is at once honest and rewarding. It opens a window into Yosemite’s unique geology and climbing culture, where precision and patience pay off in a controlled yet invigorating ascent.