Mount Everest rises 8,848.86 m above sea level - the highest point on Earth. Orbit the massif beside Lhotse and Nuptse and toggle the red death-zone band above 8,000 m, where the air holds only a third of sea-level oxygen.
Published figures: summit 8,848.86 m (2020 China-Nepal joint survey); first ascent by Edmund Hillary and Tenzing Norgay on 1953-05-29; the death zone above about 8,000 m holds roughly one third of sea-level oxygen.
Mount Everest 3D Explorer
This browser explorer shows Mount Everest as a schematic Himalayan massif: the 8,848.86 m summit beside its neighbours Lhotse and Nuptse, snow above the schematic snowline, and a translucent red band marking the death zone above 8,000 m.
Everest - Sagarmatha in Nepali, Chomolungma in Tibetan - stands on the Nepal / Tibet (China) border in the Mahalangur Himal range. Edmund Hillary and Tenzing Norgay made the first confirmed ascent on 1953-05-29. Above about 8,000 m the air pressure falls to roughly a third of sea level, which is why climbers call it the death zone, and the mountain still rises a few millimetres each year as the Indian plate pushes under Asia.
- Toggle the death-zone band above 8,000 m
- Toggle the snow caps above the schematic snowline
- Read summit, first-ascent, and oxygen figures in the panel
- Compare Everest with Lhotse (8,516 m) and Nuptse (7,861 m) beside it
- Drag to orbit, scroll or pinch to zoom
- Runs fully in the browser with the vendored three.js engine - no account, no upload
| Figure | Published value |
|---|---|
| Summit elevation | 8,848.86 m (2020 China-Nepal joint survey) |
| Range | Mahalangur Himal, Himalaya - Nepal / Tibet (China) border |
| Local names | Sagarmatha (Nepali), Chomolungma (Tibetan) |
| First ascent | Edmund Hillary and Tenzing Norgay, 1953-05-29 |
| Death zone | above about 8,000 m - roughly 1/3 of sea-level oxygen |
| Neighbours | Lhotse 8,516 m; Nuptse 7,861 m |
| Uplift | a few millimetres per year (tectonic) |
For the opposite extreme - the lowest land on Earth - open the Dead Sea 3D Explorer, or walk the rock layers of the Grand Canyon 3D Explorer.
Orbiting the Everest massif, toggling the death-zone band, and comparing the summit against Lhotse and Nuptse all happen on your own device: the schematic terrain is drawn with WebGL and the vendored three.js engine loads once (about 0.7 MB) and is cached, so returning to spin the peak or re-read the summit figures needs no re-download and no upload.
After the schematic relief loads, this explorer fetches real elevation data - Terrarium terrain tiles from Mapzen and AWS Open Data, derived from NASA/USGS digital elevation models - plus true-color Sentinel-2 satellite imagery of the Khumbu massif, and swaps them in over the same footprint so the ridgelines and summit shape you see are measured terrain, not a procedural sketch.
This is an educational approximation - ridge shapes, the valley floor, and the snowline are schematic teaching cues, not survey terrain.
Frequently Asked Questions
How tall is Mount Everest?
8,848.86 m above sea level, per the 2020 China-Nepal joint survey - the highest point on Earth.
What is the death zone?
The altitude band above about 8,000 m where air pressure gives only about a third of sea-level oxygen - the human body cannot acclimatize there and most climbers use bottled oxygen.
Who climbed Everest first?
Edmund Hillary of New Zealand and Tenzing Norgay, a Sherpa of Nepal, reached the summit on 1953-05-29 via the southeast ridge.
Where is Everest exactly?
On the border of Nepal and Tibet (China) in the Mahalangur Himal section of the Himalaya - Sagarmatha in Nepali, Chomolungma in Tibetan.
Is Everest still growing?
Yes - the collision of the Indian and Eurasian plates lifts the Himalaya a few millimetres per year, though earthquakes can also change its height slightly.
Is this a terrain simulation?
No. It is an educational explorer using published figures - the ridge shapes and snowline are schematic teaching cues, not survey terrain.