Seton Portage () is a community located on a narrow strip of land between Anderson Lake and Seton Lake in Squamish-Lillooet Regional District, British Columbia. The community is home to two Seton Lake First Nation communities at either end of the portage and a non-native recreational community between them. Local services include a post office, fire department, library, and general store, among other small businesses. The community is also the location of Seton Portage Historic Provincial Park, a small provincial park protecting a historically significant stretch of railway. Geology "The Portage" was formed about 10,000 years ago when the flank of the Cayoosh Range, which is the south flank of the valley, let go and slid into the middle of what had been a single lake. The result is a location similar to Interlaken, Switzerland, with two fjord-style lakes flanking a narrow and very short strip of land between them. Remnants of old lake bottom survive as benchlands lining the north banks of Seton and Anderson Lakes. It may be that the glacial moraine at the foot of Seton Lake, which had been at the foot of the Seton Glacier and, after it melted, dammed the older, larger lake in until the slide and its destructive wave (see megatsunami). The inundation then washed part of it away to open Seton Creek and drain the glacial melt to today's lake level, or close to it (since the lake level is 10–12 feet higher because of the power project completed in 1958). Archaeological issues Much of neighbouring Shalalth is on these alluvial benches, but Seton Portage is entirely situated atop the rubble of the great slide, but covered with good soils from the inroads of vegetation over the millennia. Prior to the Fraser Canyon Gold Rush and the Portage's role as a key component in the Douglas Road - the sheltered and fertile land of the Portage had been home to what are estimated to have been hundreds of quiggly holes (kekuli, meaning "underneath" in the Chinook Jargon), each of which had been a house with multiple residents. One witness to the pre-Gold Rush Portage told of coming over the mountain pass which leads into the valley from the north, and looking down on the Portage looked like "many stars in the sky". Such a description suggest a very large population, but no one knows for sure, and between smallpox and other