Before aerial surveillance was extensively used, a hut was maintained on the summit for fire-spotting in the remote north-central part of the province. A very similar hut was maintained on Big Bald Mountain. Triangulation among these huts and other fire towers allowed the locations of wildfires to be determined quickly and easily.
Mount Carleton is a monadnock, an erosional remnant of resistant igneous rocks that remained after an ancient Mesozoicpeneplain surface was uplifted in the Cenozoic to form a plateau, and subsequently dissected via millions of years of erosion by wind, water and glacial ice.[6][7][8][9] It consists of 400 million-year-old rhyolitic and basaltic volcanics.