Can you see the Kunlun ridge on the India–China border from Pik Dankova, Tian Shan?

Yes, you can

535 km line of sight toward the south (bearing 170°), computed on 30 m Copernicus terrain with Earth curvature and standard atmospheric refraction.

The answer

Yes. The Kunlun ridge on the India–China border is visible from Pik Dankova, Tian Shan across 535 km, looking down: Earth's curvature drops the target 19,585 m, leaving its top 19,115 m below eye level and still clear of the ground in between.

This is the longest known line of sight on Earth: 536 km from Pik Dankova, across the entire Tarim Basin, to an unnamed ridge on the India–China border. Nobody has ever photographed it, and our 30-metre terrain model shows exactly how close the line runs.

3D terrain view from Pik Dankova, Tian Shan toward the Kunlun ridge on the India–China border

Straight-line distance535 km

Direction170° south

Observer eye level5,870 m

Target elevation6,339 m

Curvature drop at the target19,585 m

Below your eye level19,115 m

From Pik Dankova, Tian Shan, at an eye level of 5,870 m, the sightline to the Kunlun ridge on the India–China border runs 535 km and clears every ridge in between. Over that distance Earth's curvature drops the target 19,585 m below a flat-earth line, but at 6,339 m, it still rises above the horizon. The view is geometrically real: whether you actually get it depends on haze, not terrain. The tightest squeeze is mid-path, where the sightline passes just 3 m above the terrain at km 268.

A line like this is only ever seen under optimal conditions: clean high-altitude air and the assistive refraction of a cold, stable dawn. Our featured 360° analysis from this same summit finds a clear 508 km sightline into the Kunlun at standard refraction.

The line on the map

The 535 km sightline over satellite imagery, drawn as the great-circle path light would follow.

The terrain profile

Elevation profile from Pik Dankova, Tian Shan to the Kunlun ridge on the India–China border. Like every elevation profile, the vertical axis is stretched (≈15× here), but the geometry is real: mid-path, Earth's surface genuinely stands 5,619 m above the straight line between the two points. Light bends only slightly around that bulge, so whatever it covers stays hidden.

Check your own two points with the calculator →

Frequently asked questions

Can you see the Kunlun ridge on the India–China border from Pik Dankova, Tian Shan?

Yes. The terrain-limited line of sight is clear across 535 km, accounting for Earth's curvature and standard atmospheric refraction. Atmospheric haze is the only thing that can hide the view.

How far is the Kunlun ridge on the India–China border from Pik Dankova, Tian Shan in a straight line?

535 km great-circle distance, on a bearing of 170° (south).

How much does Earth's curvature hide over 535 km?

At the target's distance the curvature drop is about 19,585 m: anything lower than that (relative to the observer's horizon plane) is hidden behind the bulge of the Earth. The Kunlun ridge on the India–China border is tall enough to rise above it.

How was this calculated?

UpToWhere walks the full terrain profile between the two points on 30 m-resolution Copernicus GLO-30 elevation data, applying Earth curvature and standard atmospheric refraction (k = 0.13), the same physics surveyors use. You can run the same point-to-point check between any two places on Earth.

More famous sightlines

Wondering about a different pair?

The free calculator shows how far you can see from any point on Earth. Pro adds point-to-point checks: this exact analysis, between any two places you choose.

Open the calculator