Carmack's Reverse is a computer graphics technique generally credited to John Carmack. It is a technique for Stencil Shadow Volumes[?] that solves the problem of when the viewer's "eye" enters the shadow volume.
... Reservation[?]
Turtle Mountain Indian Reservation[?]
Spirit Lake Indian Reservation[?]
Standing Rock Indian Reservation[?]
Cheyenne River Sioux Ind ...