For the first time ever,... Korea Post has successfully test delivered mail to a mountainous region using an autonomous drone.
The drone delivered five kilograms of mail to Byeolmaro observatory in Yeongwol, Gangwon-do Province.
It only took six minutes to fly the 2-point-3 kilometers from the local post office to the observatory.
The same trip takes more than 30 minutes by road.
Flying a drone in mountainous areas requires a delicate flight technique.... due to the rough terrain and geographical features like trees and valleys.
Korea Post says... it aims to further foster related technology to commercialize drone mail delivery by 2022.