Cho La Pass: The Landscape Between Gokyo and Everest

Cho La Pass is a mountain pass in Solukhumbu District, Nepal. It connects Thagnak on the Gokyo side with Dzongla on the Khumbu side and provides a high route between Gokyo Valley and the Everest region. The pass lies within Sagarmatha National Park, close to the Ngozumpa Glacier.

The landscape around Cho La is made up of rock, snow, ice and high mountain valleys. Cholatse is close to the pass, while Cho Oyu, Everest, Lhotse and other major peaks can be seen from different parts of the surrounding area. From Gokyo, the route reaches the pass from the direction of the Ngozumpa Glacier; on the other side, it leads toward Dzongla and the Everest Base Camp route.

How High is Cho La Pass?

Cho La Pass is 5,420 metres (17,782 feet) above sea level. Thagnak is around 4,700 metres on the Gokyo side, while Dzongla is about 4,830 metres on the other side. The pass rises above both of these high altitude villages before the route crosses into the neighbouring valley.

At this elevation, there are no forests and very little vegetation. Much of the ground around Cho La Pass is made up of rock, moraine, snow and ice. The amount of snow changes with the season, so the appearance of the pass is not the same throughout the year.

Cho La is also higher than Everest Base Camp, although the difference is only about 56 metres. Its elevation is close to that of the highest parts of the Everest region, which is why altitude, cold and changing weather are important parts of the landscape here.

For Cho La Pass elevation, 5,420 metres is the figure most commonly used for the pass itself. Nearby places have their own elevations, so figures for Thagnak, Dzongla, Gokyo and other points should not be confused with the height of Cho La.

What is the Landscape Around Cho La Pass?

The Cho La Pass landscape is mostly rock, loose stone, snow and ice. The ground is uneven and has rocky slopes and scattered deposits of broken stone across the higher parts of the pass. Snow covers some areas during colder periods and exposes more of the rock as it melts.

Moraine is also common in the surrounding glacial landscape. It consists of rock and sediment carried and left behind by moving or retreating ice. Similar deposits can be seen across the high valleys of the Khumbu Himalayas, where glaciers have shaped much of the landscapes.

There is little soil around Cho La and very little vegetation at this altitude. The land is mostly open, with bare slopes, rocky ground and patches of snow. The surface changes from loose debris to harder rock and icy sections as the land rises and falls around the pass.

The Cho La Pass geography is therefore closely tied to ice, rock and the movement of water and snow through the high mountain environment. It is a landscape shaped by natural forces rather than by permanent human settlement or agriculture. 

Mountains Around Cho La Pass

Several well known peaks surround the Cho La Pass area. Cholatse is the closest major peak, with an elevation of 6,440 metres. It is located near the route between Dzongla and Lobuche and is one of the most distinctive mountains seen from the Khumbu side.

Cho Oyu, at 8,188 metres, is northwest of Cho La and is closely associated with the Gokyo region. From the Gokyo side, the mountain stands beyond the Ngozumpa Glacier and can be seen from several points when the weather is clear.

Taboche is another major peak in the area, with an elevation of 6,495 metres. Lobuche East and Lobuche West are farther east near Lobuche and the main Everest Base Camp route.

Mount Everest, Lhotse and Nuptse are farther away from Cho La Pass. They can be seen from some parts of the route in clear conditions, particularly on open sections with views across the Khumbu region.

Cho La Pass and the Ngozumpa Glacier

The Ngozumpa Glacier is one of the main geographical features on the Gokyo side of Cho La Pass. It extends south from the flanks of Cho Oyu through the Gokyo region and is one of the largest glaciers in Nepal. The Gokyo Lakes lie along its western side, with the glacier's lateral moraine separating the ice from the lakes.

Thagnak, also known as Dragnag, is the last overnight stop on the Gokyo side before the climb toward Cho La. From here, the route rises through rocky ground before reaching the snow and ice found near the upper part of the crossing.

The glacier has influenced much of the land around the Gokyo Valley. Its movement has left large moraine deposits along the valley, while meltwater from the glacier contributes to the Gokyo lake system and the upper Dudh Koshi drainage.

For the Cho La Pass Trek, the Ngozumpa Glacier is therefore more than a landmark beside the route. It is part of the glacial system that has shaped the valley on the Gokyo side before the route reaches the high pass. 

Cho La Pass Weather

Weather at Cho La Pass is cold because the pass reaches 5,420 metres. Temperatures can fall below freezing, especially at night and during winter. Strong wind and cloud can also arrive quickly, which cuts the visibility of Cholatse, Cho Oyu and the surrounding peaks.

Cho La Pass in October falls after the main monsoon season ends in Nepal, when clearer skies can reveal the mountains and much of the route may have little fresh snow. Conditions are not fixed, however, and snowfall can occur at any time at this elevation. Cho La Pass in November brings colder temperatures, with a greater chance of snow and ice as winter approaches.

During the winter months, snow can cover the pass for extended periods. The monsoon brings more cloud and precipitation, while snow is possible at the pass even when rain is falling at much lower elevations. These seasonal changes affect the amount of exposed rock, the visibility of the mountains and the appearance of the Cho La Pass landscape.

Geology of Cho La Pass

Cho La is part of the Higher Himalayan geological zone of eastern Nepal. The wider Khumbu Himal contains high grade metamorphic rocks, including gneisses and schists, that were transformed under the heat and pressure associated with the formation of the Himalayan mountain belt. Geological mapping in the Khumbu region has also documented folds, shear zones and later extensional structures within these rocks.

Around Cho La, much of what is visible at the surface is not fresh bedrock. Rock fragments and glacial deposits have accumulated through the action of ice, meltwater, weathering and gravity. This is particularly evident around the high ground connecting the Gokyo and Khumbu sides, where exposed rock occurs beside moraine and seasonal snow and ice.

The distinction between bedrock and glacial material is important when describing the geology of Cho La Pass. The underlying Himalayan rocks belong to a much older geological history, while moraine and other loose deposits are products of relatively recent glacial activity. The present surface is therefore a mixture of materials with very different ages and origins.

The wider Khumbu Himal preserves evidence of repeated deformation and glacial modification. Studies of the region have identified high grade metamorphism and several phases of folding and shearing, while the present high valleys continue to show the effects of glaciers and meltwater.

For Cho La Pass trekking, the geological story is best described at this regional scale. There is strong evidence for the geological history of the Khumbu Himal, but a detailed rock by rock interpretation of the pass itself should not be assumed from studies covering the wider region.

What is the Cho La Pass Crossing Like?

The Cho La Pass crossing links Thagnak and Dzongla through the high ground between the Gokyo and Khumbu valleys. Rock, loose moraine, snow and ice occur along the crossing, with snow cover depending on the season and recent snowfall.

The Gokyo to Cho La Pass route reaches the pass after leaving Thagnak. Snow and ice can remain around the crossing during the colder months, and frozen sections may require footwear with better grip. Microspikes or crampons can be useful when ice or hard snow covers the route.

The Cho La Pass glacier crossing is the part of the route where ice and snow become most relevant. The amount of ice is not identical every year, and fresh snowfall can cover parts of the route. For this reason, descriptions of the crossing can differ between autumn, winter and spring.

After crossing Cho La, the Cho La Pass to Dzongla route descends toward the Khumbu side. From Dzongla, the trail continues toward Lobuche, where it meets the main route toward Everest Base Camp. 

From Gokyo Valley to the Everest Side

After Cho La, the route moves toward Dzongla and Lobuche, where Cholatse and Taboche remain prominent around the trail. The view shifts away from the Gokyo side as the route moves deeper into the Khumbu region.

The change is not marked by one particular point. The glacier country gives way to rocky valleys and wider views toward the eastern Khumbu, while the peaks around Cholatse and Taboche remain close to the route. 

This is where the Gokyo to Dzongla trek fits into the wider geography of the region. Cho La provides the high connection between the two sides, while the route beyond the pass continues toward the main Khumbu trail.

Final Thoughts 

Cho La brings together two sides of the Khumbu through one high mountain crossing. The route moves from the Gokyo side toward Cholatse, Dzongla and the valleys farther east, with the views changing as the trail passes over the divide. It is the combination of rock, ice, high peaks and glacial landforms that gives the Cho La Pass Trek its particular setting.

For a Nepal trekking trail, this is a rare combination of geology, ice and high mountain scenery in one continuous route. Cho La is not just a point to cross on the map. Its position between Gokyo and the Khumbu is what gives the pass its place among the high routes of Nepal.