The Sà Âhaeri Line or Ryongjà Âng Line is a closed non-electrified narrow-gauge railway line of the Korean State Railway in South Hwanghae Province, North Korea, running from Ch'à Âlgwang at the junction of the à ¬nnyul and Sà Âhae Kammun lines to Ryongjà Âng.
After the end of the Korean War the Railway Ministry of the DPRK began to expand and improve its network, including in South Hwanghae, leading to the opening of a new narrow-gauge line from Sugyo to Ch'à Âlgwang in 1963. With the opening of the new line, the Sariwà ÂnâÂÂSugyoâÂÂCh'à Âlgwang line was named à ¬nnyul Line, leaving the Changyà Ân Line as just the short branch from Sugyo to Changyà Ân.
In 1964, another new narrow-gauge line was opened from Ch'à Âlgwang, to serve the iron ore mines around Sà Âhaeri and the port at Ryongjà Âng. This line was the Sà Âhaeri Line.
In 1971, a new standard gauge line was opened from à ¬np'a on the former Sahae Line to Chaeryà Âng, and at the same time, the Chaeryà ÂngâÂÂSinch'à ÂnâÂÂSugyo section was converted to standard gauge. The opening of the new standard gauge line from à ¬np'a to Chaeryà Âng led to the closure of the narrow gauge Sariwà ÂnâÂÂChaeryà Âng line. The regauging of the rest of the line from Sugyo to Ch'à Âlgwang was completed in 1973, but the Sà Âhaeri Line was left as a narrow-gauge line.
At its peak the line carried 6,000 tonnes of ore daily. Besides the frequent trains to stations, there were 12 daily round trips to the port, each train consisting of 21 self-unloading hoppers. The line has been out of use since 2002.
The orange background in the "Distance" box indicates that section of the line is not electrified narrow-gauge.