Batak Simalungun
Indigenous Group Batak Simalungun (Also known as: Simalungun Batak, Orang Batak Simalungun, Simelungun, Simelungan,Timur, Batta)
Location Indonesia, island of Sumatra, Sumatera Utara Province, north central Sumatra, highlands between Lake Toba and the eastern coast of Sumatra, northeast of Lake Toba, near Parapat/Parapet.
Estimated Population 1,200,000 (2000, SIL International)
Environment Rainforest Highlands
Lifestyle Sedentary 
Subsistence Agriculture / Handicraft Sales / Paid Labor
Level of Assimilation Assimilated
Language Family Batak Simalungun
Classification: Austronesian, Malayo-Polynesian, Sumatra, Batak, Simalungan 
Alternate Names: Simalungun Batak, Orang Batak Simalungun, Simelungun, Simalungan, Timur, Batta 
Website URLs ethnologue
Royal Netherlands Institute of Southeast Asian and Caribbean Studies (KITLV)
Wikipedia: Batak (Simalungun, as ethnic subset of Batak group)
1993 Library of Congress Report (Batak cultural overview, statistics): 
Indonesia Department of Tourism 
Indahnesia.com
Joshua Project
NGOs Bona Ni Pasogit (Association of Batak Tribes in Europe)
Monitor International (Lake TobaŚLake Champlain Sister Lakes Partnership)
World Rainforest Movement
Down To Earth
The Corner House