Walden North was a private estate and scientific research facility and manufacturing installation built by American uranium prospector Vernon Pick.

Towering over the lower reaches of the canyon and Walden North as a large BC Hydro-run campground on the creek's final bottomlands near the Seton River, is Mount Brew.

The combined gorge-walls of Seton Lake, the Cayoosh Range, Cayoosh Canyon, Mount Brew and its northward buttress, and the last buttress of Mission Ridge, form a large canyon complex ranging from 5000' to 7000' which also is a zone of extreme aridity and high summer temperatures, featuring lizards, cactus, and sagebrush.

In this locality, Governor Seymour commissioned one of the Interior's three first flour mills in 1862, the others being at Big Bar 60 km up the Fraser, in times when the Lillooet District produced mostly grain, as a measure to secure food supplies for the Cariboo Gold Rush.

[2] "Cayoosh" is the local form of "cayuse", and in the Lillooet and Chilcotin regions refers to a particular strain of Indian mountain pony[4] The traditional indigenous name of the stream is said to be Tsammuk and/or Tsho-ha-mous.