Southern Interior

The British Columbia Interior, BC Interior or Interior of British Columbia, usually referred to only as the Interior, is one of the three main regions of the Canadian province of British Columbia, the other two being the Lower Mainland, which comprises the overlapping areas of Greater Vancouver and the Fraser Valley, and the Coast, which includes Vancouver Island and also including the Lower Mainland (from the perspective of the Interior).

The region, which includes the Interior Plateau as well as various mountain ranges and the valleys between them, comprises everything inland from the Coast Mountains and reaching east to the Rocky Mountains and, in the northeast, British Columbia's sector of the Prairies, the Peace River Block. "Interior" is usually and properly capitalized but turns up in lower-case in various books and magazines. The non-coastal areas of the province are considered to be "in the Interior", although the sparsely populated regions of its northern half are usually referred to only as "the North".

The town of Hope, at the eastern end of the Fraser Valley and at the foot of the Fraser Canyon, is often considered the "Gateway to the Interior" and bears an entrance arch to that effect, though in practical terms the Interior does not begin until somewhere between Yale and Boston Bar, in the Fraser Canyon, or until the summits of the Coquihalla and Allison Passes. The boundary between "the Coast" and "the Interior" along the Highway 99 corridor is nominally between Whistler and Pemberton, as Pemberton is often described as being in the Interior, but from the inland perspective it is often seen as part of the Coast because of its wetter climate and close ties to the Lower Mainland.

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Wikipedia