Hand axes and other artifacts dated to early
Paleolithic (1.8 million to 100,000 years ago) have been found in alluvial deposits along the
Babai River in Dang Valley.
Archeologists classify these as
Acheulean, i.e. 'second-generation' toolmaking that succeeds the very oldest
Olduwan. There are more numerous, less ancient archeological sites dating to the
Upper Paleolithic/
Late Pleistocene (about 50,000 to 10,000 years ago). These are also along the Babai, as well as in Deukhuri Valley (Rapti River) adjacent and south of Dang Valley. Throughout historic times, and probably earlier, the Dang and Deukhuri valleys were home to
indigenous Tharu people. The
House of Tulsipur ruled one of the largest
Taluqs of
Oudh,
India, which then included the
Dang and Deukhuri Valleys. Therefore, it also counted as one of the
Baise Rajya (; 22 Principalities), a confederation in what
became western Nepal. The town shares its name with another
Tulsipur in
Dang Deukhuri District, Nepal (c. north); the two towns are linked historically by having the same ruler. About 1760 AD, these kingdoms were annexed by the
Shah Dynasty during the re
unification of Nepal.
Tulsipur lands south of the Siwalik Hills were not taken. Since Dang was somewhat higher, cooler, better-drained and therefore had fewer instances of
malaria than most of
Inner Terai Valleys of Nepal, it was settled to some extent by Shah and
Rana courtiers and other
Nepalese. Deukhuri was more of a Tharu enclave until
DDT was introduced to control the malaria-bearing
Anopheles mosquito in the 1950s. The municipality was established 29 January 1979 with the amalgamation of Ghorahi VDC and Sewar Bangaun VDC with a combined population of 12,279. It was named Tribhuvannagar Municipality after King
Tribhuvan (ruled 1911–1955). After Nepal became a
republic in 2008 the name changed back to Ghorahi Municipality. ==Transportation==