![Shelton Rego on Twitter: Shelton Rego on Twitter:](https://pbs.twimg.com/media/ByHiAuoCQAAhwRX.jpg)
Shelton Rego on Twitter: "Chilling at "Khardungl-ai" Pass. 18000 ft and counting. #high http://t.co/kbcIbB5Ycf"
![Agung Volcano Volcanic Ash Advisory: ERUPTION TO FL180 OBS VA DTG: 12/1750Z to 18000 ft (5500 m) / VolcanoDiscovery Agung Volcano Volcanic Ash Advisory: ERUPTION TO FL180 OBS VA DTG: 12/1750Z to 18000 ft (5500 m) / VolcanoDiscovery](https://volcanodiscovery.de/uploads/pics/Agung-satellite-2019-6-12.jpg)
Agung Volcano Volcanic Ash Advisory: ERUPTION TO FL180 OBS VA DTG: 12/1750Z to 18000 ft (5500 m) / VolcanoDiscovery
![Blood volume and haemoglobin concentration at altitudes above 18,000 ft. (5500 m) - Pugh - 1964 - The Journal of Physiology - Wiley Online Library Blood volume and haemoglobin concentration at altitudes above 18,000 ft. (5500 m) - Pugh - 1964 - The Journal of Physiology - Wiley Online Library](https://physoc.onlinelibrary.wiley.com/cms/asset/c1c9698a-4a26-4741-b8ab-78b7cc27bc7e/jphysiol.1964.sp007335.fp.png)
Blood volume and haemoglobin concentration at altitudes above 18,000 ft. (5500 m) - Pugh - 1964 - The Journal of Physiology - Wiley Online Library
![Shiveluch Volcano Volcanic Ash Advisory: VA EMISSIONS CONTINUING OBS VA DTG: 03/2320Z to 18000 ft (5500 m) / VolcanoDiscovery Shiveluch Volcano Volcanic Ash Advisory: VA EMISSIONS CONTINUING OBS VA DTG: 03/2320Z to 18000 ft (5500 m) / VolcanoDiscovery](https://img.volcanodiscovery.com/uploads/pics/Shiveluch-satellite-2019-9-4.jpg)
Shiveluch Volcano Volcanic Ash Advisory: VA EMISSIONS CONTINUING OBS VA DTG: 03/2320Z to 18000 ft (5500 m) / VolcanoDiscovery
![🔥 A picture I took of Mount Denali, Alaska. While Everest is the highest point in the world, Mount Denali has a vertical rise of ~18,000 ft (5,500 m), beating Everest's ~12,000 🔥 A picture I took of Mount Denali, Alaska. While Everest is the highest point in the world, Mount Denali has a vertical rise of ~18,000 ft (5,500 m), beating Everest's ~12,000](https://i.redd.it/gjg217mks4051.jpg)