Big Lost Lake
Big Lost Lake is an alpine lake that is found in Blaine County, Idaho, United States. It is located in the Smoky Mountains, in the Sawtooth National Forest.
The lake is most easily accessed via trail 135 from the end of forest road 170. The lake is located just east of Prairie Creek Peak. It is also near Smoky [Lake (Blaine County, Idaho)|Smoky Lake], Little [Lost Lake], and Upper [Norton Lake|Upper] and Lower Norton lakes.