The trail north from Namche diverges at Sanasa — left to Everest Base Camp, right to Gokyo. Most trekkers choose Kala Patthar because it sits on the standard circuit. The minority who veer toward Gokyo get the better view. From Gokyo Ri at 5357 meters you see Everest, Lhotse, Makalu, and Cho Oyu arrayed across the northern horizon simultaneously — four eight-thousanders in a single sweep. Kala Patthar shows you Everest close, dramatic, but isolated. Gokyo Ri shows you where Everest sits in the actual architecture of the range. You climb before dawn, reach the cairn as the sun hits Cho Oyu first, then watch the light move across the chain. Below spreads the Ngozumpa Glacier, Nepal's largest, a broken highway of ice running eighteen kilometers from Cho Oyu's flanks down through the valley. The glacier's surface churns with lateral moraines, ice towers, and meltwater pools that shift seasonally. The lateral moraine path above the glacier's western edge runs from Dole through Machhermo to Gokyo village at 4790 meters — three days of steady altitude gain that demands acclimatization discipline.
The Three Passes Trek links Gokyo to Everest Base Camp through high cols that test mountain fitness completely. Renjo La at 5340 meters crosses west from Gokyo to Thame — a long day with loose scree on the descent. Cho La at 5420 meters connects Dzongla to Thame via a glacier traverse that requires crampons, ice axe competence, and the ability to assess crevasse danger. Fixed ropes mark the steepest sections but weather closes this pass frequently. Kongma La at 5535 meters runs from Lobuche to Chhukung — the highest, the least trafficked, the most exposed to afternoon storms. The full circuit takes eighteen to twenty-one days depending on acclimatization needs and weather holds. This is not trekking in the entry-level sense. You cross glaciers, navigate rockfall zones, sleep above 5000 meters repeatedly, and depend entirely on your own physical reserves when weather turns. Altitude preparation begins weeks before departure — discuss acclimatization protocols, recognize acute mountain sickness symptoms, and understand evacuation limitations with a travel physician before you book. Helicopter rescue from these elevations depends on weather, time of day, and helicopter performance limits that change with temperature.