Hell Gap complex is a Plano culture from 10,060 to 9,600 before present. It is named after the Hell Gap archaeological site, in Goshen County, Wyoming.
Other Hell Gap complex sites
In addition to the Hell Gap archaeological site, other Wyoming archaeological sites include the Sister's Hill site in northeastern Wyoming and a bison kill site near Casper, Wyoming. Jones-Miller Bison Kill Site is the only Hell Gap complex site in Colorado.
The Hell Gap projectile points are long stemmed, convex blades.
References
Hell Gap complex Wikipedia(Text) CC BY-SA