Dusy Basin

Overview

Dusy Basin is classic high Sierra: a broad, above-treeline basin dotted with clear alpine lakes and ringed by jagged granite. It sits just beyond Bishop Pass, where you officially enter the park. Expect big horizons, mirror-calm mornings on the lakes, and a surprising sense of solitude once you drop off the pass.

Getting There

Most backpackers approach from South Lake on the east side, climbing past a chain of lakes (South, Long, Saddlerock, Bishop) on a well-built trail of rocky switchbacks up to Bishop Pass. The pass tops out around 11,972 feet before you descend roughly 1.5 miles into the basin. Typical itineraries run 1–3 days with about 15 miles round trip and around 3,000 feet of total gain.

What You’ll See

Above the trees, the basin opens to wide-angle views and a constellation of lakes—some known simply by their elevations, like Lake 11,393. Granite slabs, tundra meadows, and photogenic shorelines make it easy to wander off the main tread. Peaks in the neighborhood include Mt. Agassiz and Isosceles Peak, which glow at sunrise and sunset.

Trail Experience

The grade to the pass is steady and straightforward, but altitude makes it feel bigger. Past the pass, crowds thin dramatically. In the basin, light cross-country travel between lakes is intuitive on granite slabs—bring a topo or GPS if you plan to roam. Water is plentiful, but you’ll need to filter or treat it.

Permits and Rules

Overnights require the Bishop Pass – South Lake entry permit (managed by Inyo National Forest with a daily quota). Bear canisters are the norm in the Sierra backcountry, and campfires are not allowed at these elevations. Dogs are allowed up to the top of Bishop Pass from the east but not beyond into the park.

Camping

You’ll find many low-impact, established sites set back from shorelines. Camp on durable surfaces well away from water to protect the fragile alpine. Nights are cold and often windy at 11,000+ feet—pack a warm sleep system and expect frost even in fair weather.

Best Time to Visit

July through September offers the most reliable trail conditions. Early fall can be magic with crisp air and fewer people, but shoulder-season storms can bring fog, wind, or even early snow. Start early to crest Bishop Pass before typical afternoon buildups, and carry layers for rapid weather swings.

Photography

Mornings are prime for glassy reflections, while golden hour lights up the Palisades and the sculpted skyline around the basin. Fall trips add bonus color on the approach to the trailhead, even if the basin itself is above the aspens.