Original sentence: Following a land extension in 1989, it now covers 103 km².It may be related to the Old West Norse word sunna, meaning Sun, and Sonfjället would thus literally mean "the sun fell".It was established in 1909, making it one of Europe's oldest national parks.Sonfjället, also written as Sånfjället (local dialect: Sôna), is a national park situated in Härjedalen, in central Sweden.The exact meaning of the word son in this context is not known.The name was between 1919 and 2010 officially spelled as Sånfjället, which the governing body thought better represented the pronunciation, however in June 2010 the official spelling was reverted to Sonfjället.The national park is named after the mountain Sonfjället which reaches 1,278 meters above sea level.The park is famous for its animal fauna: a resident bear tribe, and a large elk tribe.This theory has however been disputed and claimed to be inconsistent with the local pronunciation
Edited sentence: It was established in 1909, and following a land extension in 1989, it now covers 103 km².Sonfjället (also known as Sånfjället) is a national park situated in Härjedalen, in central Sweden.The national park is named after mount Sonfjället; its highest peak is at 1,278 meters, and is renowned for a splendid view, if one walks all the way up.The park is famous for its animal faune: a resident bear tribe, and a large elk tribe.The reason as to why there are two names is because Swedish officials wanted to change the spelling the locals used into the unetymological Sånfjället.The word son is related to the English word sun and Sonfjället literally means "the sun fell"