Tangentially, Sumatra and western Sumatra in particular are pretty interesting. They have possibly the best curry in Indonesia (beef rendang), different linguistic groups such as the Minangkabau[0], and just northwest off the coast they have one of the best natural surf breaks in the world.[1] A flooded volcano caldera to the north was a major point on the hippy trail in the 1970s[2], and one of the most impressive taxidermy museums on earth lies in Medan.[3] Critical in the historic interchange of ideas between Arabia, South and East Asia which formed the uniquely Indo-Chinese basis for Southeast Asian history, elsewhere on Sumatra they still have unexcavated ancient cities surpassing the scale of Angkor Wat.<p>[0] Whose Wikipedia I had a small part in approving: <a href="https://min.wikipedia.org/wiki/Laman_Utamo" rel="nofollow">https://min.wikipedia.org/wiki/Laman_Utamo</a> [1] <a href="http://www.visitniasisland.com/surfing/" rel="nofollow">http://www.visitniasisland.com/surfing/</a> [2] <a href="https://en.wikipedia.org/wiki/Lake_Toba" rel="nofollow">https://en.wikipedia.org/wiki/Lake_Toba</a> [3] <a href="http://www.rahmatgallery.com/" rel="nofollow">http://www.rahmatgallery.com/</a>