Where is the longest visible line of sight on Earth from point A to point B?









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11
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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?










share|improve this question























  • would you be happy to exclude perpetual cloud cover?
    – Gayot Fow
    Jul 27 '17 at 0:16










  • @GayotFow I don't believe there's anywhere with constant cloud on earth, but for the sake of argument, let's assume no cloud.
    – Mark Mayo
    Jul 27 '17 at 0:21






  • 2




    "I can see Russia from my house!"
    – Greg Hewgill
    Jul 27 '17 at 1:10














up vote
11
down vote

favorite












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?










share|improve this question























  • would you be happy to exclude perpetual cloud cover?
    – Gayot Fow
    Jul 27 '17 at 0:16










  • @GayotFow I don't believe there's anywhere with constant cloud on earth, but for the sake of argument, let's assume no cloud.
    – Mark Mayo
    Jul 27 '17 at 0:21






  • 2




    "I can see Russia from my house!"
    – Greg Hewgill
    Jul 27 '17 at 1:10












up vote
11
down vote

favorite









up vote
11
down vote

favorite











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?










share|improve this question















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?







where-on-earth factoids vantage-points






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jul 27 '17 at 5:21

























asked Jul 26 '17 at 23:53









Mark Mayo

128k755561270




128k755561270











  • would you be happy to exclude perpetual cloud cover?
    – Gayot Fow
    Jul 27 '17 at 0:16










  • @GayotFow I don't believe there's anywhere with constant cloud on earth, but for the sake of argument, let's assume no cloud.
    – Mark Mayo
    Jul 27 '17 at 0:21






  • 2




    "I can see Russia from my house!"
    – Greg Hewgill
    Jul 27 '17 at 1:10
















  • would you be happy to exclude perpetual cloud cover?
    – Gayot Fow
    Jul 27 '17 at 0:16










  • @GayotFow I don't believe there's anywhere with constant cloud on earth, but for the sake of argument, let's assume no cloud.
    – Mark Mayo
    Jul 27 '17 at 0:21






  • 2




    "I can see Russia from my house!"
    – Greg Hewgill
    Jul 27 '17 at 1:10















would you be happy to exclude perpetual cloud cover?
– Gayot Fow
Jul 27 '17 at 0:16




would you be happy to exclude perpetual cloud cover?
– Gayot Fow
Jul 27 '17 at 0:16












@GayotFow I don't believe there's anywhere with constant cloud on earth, but for the sake of argument, let's assume no cloud.
– Mark Mayo
Jul 27 '17 at 0:21




@GayotFow I don't believe there's anywhere with constant cloud on earth, but for the sake of argument, let's assume no cloud.
– Mark Mayo
Jul 27 '17 at 0:21




2




2




"I can see Russia from my house!"
– Greg Hewgill
Jul 27 '17 at 1:10




"I can see Russia from my house!"
– Greg Hewgill
Jul 27 '17 at 1:10










1 Answer
1






active

oldest

votes

















up vote
11
down vote



accepted










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.






share|improve this answer






















  • 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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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
11
down vote



accepted










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.






share|improve this answer






















  • 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














up vote
11
down vote



accepted










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.






share|improve this answer






















  • 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












up vote
11
down vote



accepted







up vote
11
down vote



accepted






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.






share|improve this answer














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.







share|improve this answer














share|improve this answer



share|improve this answer








edited Jul 27 '17 at 6:07









phoog

66.4k10147212




66.4k10147212










answered Jul 27 '17 at 1:09









chx

36.9k376183




36.9k376183











  • 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
















  • 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















I was surprised to see that view from Mt Everest is only #8 on that list.
– Peter M
Jul 27 '17 at 14:07




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




@PeterM guess it gets obscured by other mountains nearby
– Mark Mayo
Jul 27 '17 at 22:05

















 

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