Sketch map of the Upper Irrawaddy Region in British Burma drawn by Major J.R. Hobday to accompany Lieutenant Eliott’s report on the Frontier Expedition of 1890–1891. The map highlights key routes in the region, with roads and trade routes marked in black and exploration routes in red. Topographical and geographical details are supplemented by earlier survey work conducted by Colonel Woodthorpe, C.C., R.E., during his 1884–1885 expedition through the Kanti Shan country.

The Frontier Expedition of 1890–1891 comprised a series of smaller British military operations aimed at suppressing local resistance and banditry following the annexation of Upper Burma. These efforts helped consolidate colonial control in the difficult, remote frontier areas along the Irrawaddy River. The expeditions involved river-based troop movements and punitive actions against insurgents and hill tribes to secure British authority.