They are a melodic death metal band from Sweden. Whoever the hell hinks they are black metal is a complete and total fucktard.
The band is know for their synchronised headbanging and viking themed lyrics. They took their band name from J.R.R. Tolkiens "The Lord of the Rings". It means "Mount Doom" in Sindarin, an elvish language invented by Tolkien.
Man, Amon Amarth kick so much ass, they are my favorite band.