Korean Masks, known as tal (탈), on display in National Folk Museum of Korea (국립민속박물관) in Gyeongbokgung Palace (경복궁), Seoul (서울).
Korean masks have a long tradition, with use in a variety of contexts. They were used in war, on both soldiers and their horses; ceremonially, for burial rites in jade and bronze and for shamanistic ceremonies to drive away evil spirits; to remember the faces of great historical figures in death masks; and in the arts, particularly in ritual dances, courtly, and theatrical plays.
Description taken from Wikipedia article: http://en.wikipedia.org/wiki/Korean_masks
WB adjusted in CNX2