We've had some interesting questions on being able to see country A from B, and on visibility for miles in every direction.

For a 6 ft tall person, the horizon in a 'flat' area is meant to be about 5km. Obviously the higher you are, the further you can see, if nothing is obscuring your view.

So somewhere on Earth (point A) presumably, you can see all the way, unobscured to Point B, which is further away than any other two visible points on earth.

Where would this line be - that is, between which two points A and B?


There's a list at https://beyondhorizons.eu/lines-of-sight/

COUNTRY    | FROM                          | TO                    | KM. | AZIMUTH
Kyrgyzstan | Dankova (5.971 m.)            | Hindu Tagh (6.436 m.) | 538 | 170º
Colombia   | P. Cristóbal Colón (5.776 m.) | Alto Mora (3.264 m.)  | 506 | 206º

Longest line of sight seems to be from Dankova to Hindu Tagh, 538 km in Kyrgyzstan.

  • I was surprised to see that view from Mt Everest is only #8 on that list. – Peter M Jul 27 '17 at 14:07
  • @PeterM guess it gets obscured by other mountains nearby – Mark Mayo Jul 27 '17 at 22:05

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